diff --git a/README.md b/README.md
index 4d4d14b1..ff189c21 100644
--- a/README.md
+++ b/README.md
@@ -94,8 +94,6 @@ evaluated collection that you can navigate and filter further.
 | `In.AllLoadedAssemblies()`                                                                    | all currently loaded assemblies (system assemblies [excluded](#assembly-exclusions)) |
 | `In.Assemblies(a1, a2, …)` / `In.Assemblies(collection)`                                      | the given assemblies                                                                 |
 | `In.AssemblyContaining<T>()` / `In.AssemblyContaining(typeof(T))`                             | the assembly that declares `T`                                                       |
-| `In.EntryAssembly()`                                                                          | the entry assembly                                                                   |
-| `In.ExecutingAssembly()`                                                                      | the executing assembly                                                               |
 | `In.Type<T>()` / `In.Type(typeof(T))`                                                         | a single type                                                                        |
 | `In.Types<T1, T2>()` / `In.Types<T1, T2, T3>()` / `In.Types(t1, t2, …)`                       | the given types                                                                      |
 | `In.Constructors(…)` / `In.Events(…)` / `In.Fields(…)` / `In.Methods(…)` / `In.Properties(…)` | the given members                                                                    |
@@ -111,7 +109,6 @@ point for architecture rules:
 | `Types.InAllLoadedAssemblies()`                                 | all types in all currently loaded assemblies                                   |
 | `Types.InAssemblies(a1, a2, …)`                                 | all types in the given assemblies                                              |
 | `Types.InAssemblyContaining<T>()` / `…(typeof(T))`              | all types in the assembly that declares `T`                                    |
-| `Types.InEntryAssembly()` / `Types.InExecutingAssembly()`       | all types in the entry / executing assembly                                    |
 
 `Types.InNamespace(…)` searches all loaded assemblies by default; chain one of the same `In*` methods directly
 after it to clarify the assembly source (it can only be specified once, before any further filters):
diff --git a/Source/aweXpect.Reflection/Collections/Filtered.Types.cs b/Source/aweXpect.Reflection/Collections/Filtered.Types.cs
index 0b3c5a89..4d01b646 100644
--- a/Source/aweXpect.Reflection/Collections/Filtered.Types.cs
+++ b/Source/aweXpect.Reflection/Collections/Filtered.Types.cs
@@ -507,41 +507,30 @@ internal InNamespaceResult(string @namespace)
 			///     current <see cref="System.AppDomain.CurrentDomain" /> (the default).
 			/// </summary>
 			public Types InAllLoadedAssemblies()
-				=> In.AllLoadedAssemblies().Types().WithinNamespace(_namespace);
+				=> From(In.AllLoadedAssemblies());
 
 			/// <summary>
 			///     Clarifies that the types within the namespace are searched in the given <paramref name="assemblies" />.
 			/// </summary>
 			public Types InAssemblies(params IEnumerable<Assembly?> assemblies)
-				=> new Assemblies(assemblies, $"in the assemblies {Formatter.Format(assemblies)}").Types()
-					.WithinNamespace(_namespace);
+				=> From(In.Assemblies(assemblies));
 
 			/// <summary>
 			///     Clarifies that the types within the namespace are searched in the assembly that contains
 			///     the <typeparamref name="TType" />.
 			/// </summary>
 			public Types InAssemblyContaining<TType>()
-				=> In.AssemblyContaining<TType>().Types().WithinNamespace(_namespace);
+				=> From(In.AssemblyContaining<TType>());
 
 			/// <summary>
 			///     Clarifies that the types within the namespace are searched in the assembly that contains
 			///     the <paramref name="type" />.
 			/// </summary>
 			public Types InAssemblyContaining(Type type)
-				=> In.AssemblyContaining(type).Types().WithinNamespace(_namespace);
+				=> From(In.AssemblyContaining(type));
 
-			/// <summary>
-			///     Clarifies that the types within the namespace are searched in the <see cref="Assembly.GetEntryAssembly()" />.
-			/// </summary>
-			public Types InEntryAssembly()
-				=> In.EntryAssembly().Types().WithinNamespace(_namespace);
-
-			/// <summary>
-			///     Clarifies that the types within the namespace are searched in the
-			///     <see cref="Assembly.GetExecutingAssembly()" />.
-			/// </summary>
-			public Types InExecutingAssembly()
-				=> In.ExecutingAssembly().Types().WithinNamespace(_namespace);
+			private Types From(Assemblies assemblies)
+				=> assemblies.Types().WithinNamespace(_namespace);
 		}
 
 		/// <summary>
diff --git a/Source/aweXpect.Reflection/In.cs b/Source/aweXpect.Reflection/In.cs
index a4914912..ba30365c 100644
--- a/Source/aweXpect.Reflection/In.cs
+++ b/Source/aweXpect.Reflection/In.cs
@@ -11,8 +11,11 @@
 namespace aweXpect.Reflection;
 
 /// <summary>
-///     Static entry point for assemblies.
+///     Static entry point for selecting assemblies, types and members from concrete reflection objects.
 /// </summary>
+/// <remarks>
+///     To select types <em>by criteria</em> (e.g. by namespace), use <see cref="aweXpect.Reflection.Types" /> instead.
+/// </remarks>
 public static class In
 {
 	/// <summary>
@@ -50,18 +53,6 @@ public static Filtered.Assemblies AssemblyContaining<TType>()
 	public static Filtered.Assemblies AssemblyContaining(Type type)
 		=> new(type.Assembly, $"in assembly containing type {Formatter.Format(type)}");
 
-	/// <summary>
-	///     Defines expectations on the <see cref="Assembly.GetEntryAssembly()" />.
-	/// </summary>
-	public static Filtered.Assemblies EntryAssembly()
-		=> new(Assembly.GetEntryAssembly(), "in entry assembly");
-
-	/// <summary>
-	///     Defines expectations on the <see cref="Assembly.GetExecutingAssembly()" />.
-	/// </summary>
-	public static Filtered.Assemblies ExecutingAssembly()
-		=> new(Assembly.GetExecutingAssembly(), "in executing assembly");
-
 	/// <summary>
 	///     Defines expectations on the type <typeparamref name="TType" />.
 	/// </summary>
diff --git a/Source/aweXpect.Reflection/Types.cs b/Source/aweXpect.Reflection/Types.cs
index c4631d41..9b277302 100644
--- a/Source/aweXpect.Reflection/Types.cs
+++ b/Source/aweXpect.Reflection/Types.cs
@@ -8,6 +8,12 @@ namespace aweXpect.Reflection;
 /// <summary>
 ///     Static entry point for selecting types by criteria.
 /// </summary>
+/// <remarks>
+///     The <c>In*</c> methods mirror the assembly sources on <see cref="In" /> (each is the corresponding
+///     <c>In.*(…).Types()</c>) and are mirrored again as source clarifiers on
+///     <see cref="Filtered.Types.InNamespaceResult" />. When adding a new assembly source, keep all three
+///     surfaces in sync.
+/// </remarks>
 public static class Types
 {
 	/// <summary>
@@ -40,18 +46,6 @@ public static Filtered.Types InAssemblyContaining<TType>()
 	public static Filtered.Types InAssemblyContaining(Type type)
 		=> In.AssemblyContaining(type).Types();
 
-	/// <summary>
-	///     Defines expectations on all types in the <see cref="Assembly.GetEntryAssembly()" />.
-	/// </summary>
-	public static Filtered.Types InEntryAssembly()
-		=> In.EntryAssembly().Types();
-
-	/// <summary>
-	///     Defines expectations on all types in the <see cref="Assembly.GetExecutingAssembly()" />.
-	/// </summary>
-	public static Filtered.Types InExecutingAssembly()
-		=> In.ExecutingAssembly().Types();
-
 	/// <summary>
 	///     Defines expectations on all types within the <paramref name="namespace" /> (including sub-namespaces).
 	/// </summary>
@@ -66,4 +60,4 @@ public static Filtered.Types InExecutingAssembly()
 	/// </remarks>
 	public static Filtered.Types.InNamespaceResult InNamespace(string @namespace)
 		=> new(@namespace);
-}
\ No newline at end of file
+}
diff --git a/Tests/aweXpect.Reflection.Api.Tests/Expected/aweXpect.Reflection_net10.0.txt b/Tests/aweXpect.Reflection.Api.Tests/Expected/aweXpect.Reflection_net10.0.txt
index 99151c76..0fb6bc8d 100644
--- a/Tests/aweXpect.Reflection.Api.Tests/Expected/aweXpect.Reflection_net10.0.txt
+++ b/Tests/aweXpect.Reflection.Api.Tests/Expected/aweXpect.Reflection_net10.0.txt
@@ -324,9 +324,7 @@ namespace aweXpect.Reflection
         public static aweXpect.Reflection.Collections.Filtered.Assemblies AssemblyContaining(System.Type type) { }
         public static aweXpect.Reflection.Collections.Filtered.Assemblies AssemblyContaining<TType>() { }
         public static aweXpect.Reflection.Collections.Filtered.Constructors Constructors(System.Collections.Generic.IEnumerable<System.Reflection.ConstructorInfo> constructors) { }
-        public static aweXpect.Reflection.Collections.Filtered.Assemblies EntryAssembly() { }
         public static aweXpect.Reflection.Collections.Filtered.Events Events(System.Collections.Generic.IEnumerable<System.Reflection.EventInfo> events) { }
-        public static aweXpect.Reflection.Collections.Filtered.Assemblies ExecutingAssembly() { }
         public static aweXpect.Reflection.Collections.Filtered.Fields Fields(System.Collections.Generic.IEnumerable<System.Reflection.FieldInfo> fields) { }
         public static aweXpect.Reflection.Collections.Filtered.Methods Methods(System.Collections.Generic.IEnumerable<System.Reflection.MethodInfo> methods) { }
         public static aweXpect.Reflection.Collections.Filtered.Properties Properties(System.Collections.Generic.IEnumerable<System.Reflection.PropertyInfo> properties) { }
@@ -2036,8 +2034,6 @@ namespace aweXpect.Reflection
         public static aweXpect.Reflection.Collections.Filtered.Types InAssemblies(System.Collections.Generic.IEnumerable<System.Reflection.Assembly?> assemblies) { }
         public static aweXpect.Reflection.Collections.Filtered.Types InAssemblyContaining(System.Type type) { }
         public static aweXpect.Reflection.Collections.Filtered.Types InAssemblyContaining<TType>() { }
-        public static aweXpect.Reflection.Collections.Filtered.Types InEntryAssembly() { }
-        public static aweXpect.Reflection.Collections.Filtered.Types InExecutingAssembly() { }
         public static aweXpect.Reflection.Collections.Filtered.Types.InNamespaceResult InNamespace(string @namespace) { }
     }
 }
@@ -2213,8 +2209,6 @@ namespace aweXpect.Reflection.Collections
                 public aweXpect.Reflection.Collections.Filtered.Types InAssemblies(System.Collections.Generic.IEnumerable<System.Reflection.Assembly?> assemblies) { }
                 public aweXpect.Reflection.Collections.Filtered.Types InAssemblyContaining(System.Type type) { }
                 public aweXpect.Reflection.Collections.Filtered.Types InAssemblyContaining<TType>() { }
-                public aweXpect.Reflection.Collections.Filtered.Types InEntryAssembly() { }
-                public aweXpect.Reflection.Collections.Filtered.Types InExecutingAssembly() { }
             }
             public sealed class NamespaceDependencyFilterResult : aweXpect.Reflection.Collections.Filtered.Types
             {
diff --git a/Tests/aweXpect.Reflection.Api.Tests/Expected/aweXpect.Reflection_net8.0.txt b/Tests/aweXpect.Reflection.Api.Tests/Expected/aweXpect.Reflection_net8.0.txt
index 28c2442d..245bf366 100644
--- a/Tests/aweXpect.Reflection.Api.Tests/Expected/aweXpect.Reflection_net8.0.txt
+++ b/Tests/aweXpect.Reflection.Api.Tests/Expected/aweXpect.Reflection_net8.0.txt
@@ -324,9 +324,7 @@ namespace aweXpect.Reflection
         public static aweXpect.Reflection.Collections.Filtered.Assemblies AssemblyContaining(System.Type type) { }
         public static aweXpect.Reflection.Collections.Filtered.Assemblies AssemblyContaining<TType>() { }
         public static aweXpect.Reflection.Collections.Filtered.Constructors Constructors(System.Collections.Generic.IEnumerable<System.Reflection.ConstructorInfo> constructors) { }
-        public static aweXpect.Reflection.Collections.Filtered.Assemblies EntryAssembly() { }
         public static aweXpect.Reflection.Collections.Filtered.Events Events(System.Collections.Generic.IEnumerable<System.Reflection.EventInfo> events) { }
-        public static aweXpect.Reflection.Collections.Filtered.Assemblies ExecutingAssembly() { }
         public static aweXpect.Reflection.Collections.Filtered.Fields Fields(System.Collections.Generic.IEnumerable<System.Reflection.FieldInfo> fields) { }
         public static aweXpect.Reflection.Collections.Filtered.Methods Methods(System.Collections.Generic.IEnumerable<System.Reflection.MethodInfo> methods) { }
         public static aweXpect.Reflection.Collections.Filtered.Properties Properties(System.Collections.Generic.IEnumerable<System.Reflection.PropertyInfo> properties) { }
@@ -2036,8 +2034,6 @@ namespace aweXpect.Reflection
         public static aweXpect.Reflection.Collections.Filtered.Types InAssemblies(System.Collections.Generic.IEnumerable<System.Reflection.Assembly?> assemblies) { }
         public static aweXpect.Reflection.Collections.Filtered.Types InAssemblyContaining(System.Type type) { }
         public static aweXpect.Reflection.Collections.Filtered.Types InAssemblyContaining<TType>() { }
-        public static aweXpect.Reflection.Collections.Filtered.Types InEntryAssembly() { }
-        public static aweXpect.Reflection.Collections.Filtered.Types InExecutingAssembly() { }
         public static aweXpect.Reflection.Collections.Filtered.Types.InNamespaceResult InNamespace(string @namespace) { }
     }
 }
@@ -2213,8 +2209,6 @@ namespace aweXpect.Reflection.Collections
                 public aweXpect.Reflection.Collections.Filtered.Types InAssemblies(System.Collections.Generic.IEnumerable<System.Reflection.Assembly?> assemblies) { }
                 public aweXpect.Reflection.Collections.Filtered.Types InAssemblyContaining(System.Type type) { }
                 public aweXpect.Reflection.Collections.Filtered.Types InAssemblyContaining<TType>() { }
-                public aweXpect.Reflection.Collections.Filtered.Types InEntryAssembly() { }
-                public aweXpect.Reflection.Collections.Filtered.Types InExecutingAssembly() { }
             }
             public sealed class NamespaceDependencyFilterResult : aweXpect.Reflection.Collections.Filtered.Types
             {
diff --git a/Tests/aweXpect.Reflection.Api.Tests/Expected/aweXpect.Reflection_netstandard2.0.txt b/Tests/aweXpect.Reflection.Api.Tests/Expected/aweXpect.Reflection_netstandard2.0.txt
index 0126d718..617fb73a 100644
--- a/Tests/aweXpect.Reflection.Api.Tests/Expected/aweXpect.Reflection_netstandard2.0.txt
+++ b/Tests/aweXpect.Reflection.Api.Tests/Expected/aweXpect.Reflection_netstandard2.0.txt
@@ -324,9 +324,7 @@ namespace aweXpect.Reflection
         public static aweXpect.Reflection.Collections.Filtered.Assemblies AssemblyContaining(System.Type type) { }
         public static aweXpect.Reflection.Collections.Filtered.Assemblies AssemblyContaining<TType>() { }
         public static aweXpect.Reflection.Collections.Filtered.Constructors Constructors(System.Collections.Generic.IEnumerable<System.Reflection.ConstructorInfo> constructors) { }
-        public static aweXpect.Reflection.Collections.Filtered.Assemblies EntryAssembly() { }
         public static aweXpect.Reflection.Collections.Filtered.Events Events(System.Collections.Generic.IEnumerable<System.Reflection.EventInfo> events) { }
-        public static aweXpect.Reflection.Collections.Filtered.Assemblies ExecutingAssembly() { }
         public static aweXpect.Reflection.Collections.Filtered.Fields Fields(System.Collections.Generic.IEnumerable<System.Reflection.FieldInfo> fields) { }
         public static aweXpect.Reflection.Collections.Filtered.Methods Methods(System.Collections.Generic.IEnumerable<System.Reflection.MethodInfo> methods) { }
         public static aweXpect.Reflection.Collections.Filtered.Properties Properties(System.Collections.Generic.IEnumerable<System.Reflection.PropertyInfo> properties) { }
@@ -1672,8 +1670,6 @@ namespace aweXpect.Reflection
         public static aweXpect.Reflection.Collections.Filtered.Types InAssemblies(System.Collections.Generic.IEnumerable<System.Reflection.Assembly?> assemblies) { }
         public static aweXpect.Reflection.Collections.Filtered.Types InAssemblyContaining(System.Type type) { }
         public static aweXpect.Reflection.Collections.Filtered.Types InAssemblyContaining<TType>() { }
-        public static aweXpect.Reflection.Collections.Filtered.Types InEntryAssembly() { }
-        public static aweXpect.Reflection.Collections.Filtered.Types InExecutingAssembly() { }
         public static aweXpect.Reflection.Collections.Filtered.Types.InNamespaceResult InNamespace(string @namespace) { }
     }
 }
@@ -1849,8 +1845,6 @@ namespace aweXpect.Reflection.Collections
                 public aweXpect.Reflection.Collections.Filtered.Types InAssemblies(System.Collections.Generic.IEnumerable<System.Reflection.Assembly?> assemblies) { }
                 public aweXpect.Reflection.Collections.Filtered.Types InAssemblyContaining(System.Type type) { }
                 public aweXpect.Reflection.Collections.Filtered.Types InAssemblyContaining<TType>() { }
-                public aweXpect.Reflection.Collections.Filtered.Types InEntryAssembly() { }
-                public aweXpect.Reflection.Collections.Filtered.Types InExecutingAssembly() { }
             }
             public sealed class NamespaceDependencyFilterResult : aweXpect.Reflection.Collections.Filtered.Types
             {
diff --git a/Tests/aweXpect.Reflection.Tests/InTests.cs b/Tests/aweXpect.Reflection.Tests/InTests.cs
index 07f7e463..e3977ff0 100644
--- a/Tests/aweXpect.Reflection.Tests/InTests.cs
+++ b/Tests/aweXpect.Reflection.Tests/InTests.cs
@@ -84,22 +84,6 @@ public async Task Constructors_WithEnumerable_ShouldContainProvidedConstructors(
 		await That(sut.GetDescription()).IsEqualTo("in the constructors ").AsPrefix();
 	}
 
-	[Fact]
-	public async Task EntryAssembly_ShouldContainExpectedAssembly()
-	{
-		Assembly? expectedAssembly = Assembly.GetEntryAssembly();
-
-		Filtered.Assemblies sut = In.EntryAssembly();
-
-#if NET8_0_OR_GREATER
-		await That(sut).HasSingle().Which
-			.IsEqualTo(expectedAssembly);
-#else
-		await That(sut).IsEmpty();
-#endif
-		await That(sut.GetDescription()).IsEqualTo("in entry assembly");
-	}
-
 	[Fact]
 	public async Task Events_WithEnumerable_ShouldContainProvidedEvents()
 	{
@@ -111,18 +95,6 @@ public async Task Events_WithEnumerable_ShouldContainProvidedEvents()
 		await That(sut.GetDescription()).IsEqualTo("in the events ").AsPrefix();
 	}
 
-	[Fact]
-	public async Task ExecutingAssembly_ShouldContainExpectedAssembly()
-	{
-		Assembly expectedAssembly = typeof(In).Assembly;
-
-		Filtered.Assemblies sut = In.ExecutingAssembly();
-
-		await That(sut).HasSingle().Which
-			.IsEqualTo(expectedAssembly);
-		await That(sut.GetDescription()).IsEqualTo("in executing assembly");
-	}
-
 	[Fact]
 	public async Task Fields_ShouldExcludeCompilerGeneratedBackingFields()
 	{
diff --git a/Tests/aweXpect.Reflection.Tests/TypesTests.cs b/Tests/aweXpect.Reflection.Tests/TypesTests.cs
index 67305687..ac436db3 100644
--- a/Tests/aweXpect.Reflection.Tests/TypesTests.cs
+++ b/Tests/aweXpect.Reflection.Tests/TypesTests.cs
@@ -65,24 +65,6 @@ public async Task InAssemblyContaining_WithType_ShouldContainTypesFromAssemblyOf
 		await That(sut.GetDescription()).IsEqualTo("types in assembly containing type In");
 	}
 
-	[Fact]
-	public async Task InEntryAssembly_ShouldUseEntryAssemblyAsSource()
-	{
-		Filtered.Types sut = Types.InEntryAssembly();
-
-		await That(sut).DoesNotContain(typeof(TypesTests));
-		await That(sut.GetDescription()).IsEqualTo("types in entry assembly");
-	}
-
-	[Fact]
-	public async Task InExecutingAssembly_ShouldContainTypesFromExecutingAssembly()
-	{
-		Filtered.Types sut = Types.InExecutingAssembly();
-
-		await That(sut).Contains(typeof(In));
-		await That(sut.GetDescription()).IsEqualTo("types in executing assembly");
-	}
-
 	[Fact]
 	public async Task InNamespace_ShouldContainTypesWithinNamespaceIncludingSubNamespaces()
 	{
@@ -196,26 +178,6 @@ await That(sut.GetDescription())
 			.IsEqualTo($"types within namespace \"{NamespaceScope}\" in assembly containing type In");
 	}
 
-	[Fact]
-	public async Task InNamespace_InEntryAssembly_ShouldUseEntryAssemblyAsSource()
-	{
-		Filtered.Types sut = Types.InNamespace(NamespaceScope).InEntryAssembly();
-
-		await That(sut).IsEmpty();
-		await That(sut.GetDescription())
-			.IsEqualTo($"types within namespace \"{NamespaceScope}\" in entry assembly");
-	}
-
-	[Fact]
-	public async Task InNamespace_InExecutingAssembly_ShouldUseExecutingAssemblyAsSource()
-	{
-		Filtered.Types sut = Types.InNamespace(NamespaceScope).InExecutingAssembly();
-
-		await That(sut).IsEmpty();
-		await That(sut.GetDescription())
-			.IsEqualTo($"types within namespace \"{NamespaceScope}\" in executing assembly");
-	}
-
 	[Fact]
 	public async Task InNamespace_AfterClarification_OriginalShouldStillUseAllLoadedAssemblies()
 	{