diff --git a/README.md b/README.md
index 7be4e12..381680a 100644
--- a/README.md
+++ b/README.md
@@ -60,6 +60,7 @@ There are a few important configurations you might want to change:
 
 ### Run
 A classic run would look something like this:
+
 ```python
 from dreamer import System, config, log
 from dreamer import analysis, search, extraction, loading
@@ -68,10 +69,10 @@ from dreamer import analysis, search, extraction, loading
 config.configure(...)
 
 my_system = System(
-    if_srcs=[loading.pFq(log(2), 2, 1, -1)],            # Set up the loading stage - provide inspiration functions
-    extractor=extraction.extractor.ShardExtractorMod,   # Choose an extraction module
-    analyzers=[analysis.AnalyzerModV1],                 # Choose an analysis module(s)
-    searcher=search.SearcherModV1                       # Choose the search module
+    function_sources=[loading.pFq(log(2), 2, 1, -1)],  # Set up the loading stage - provide inspiration functions
+    extractor=extraction.extractor.ShardExtractorMod,  # Choose an extraction module
+    analyzers=[analysis.AnalyzerModV1],  # Choose an analysis module(s)
+    searcher=search.SearcherModV1  # Choose the search module
 )
 
 my_system.run(constants=[log(2)])
diff --git a/dreamer/system/system.py b/dreamer/system/system.py
index 642a8b3..3aa4311 100644
--- a/dreamer/system/system.py
+++ b/dreamer/system/system.py
@@ -30,27 +30,28 @@ class System:
     """
 
     def __init__(self,
-                 if_srcs: List[DBModScheme | str | Formatter],
-                 extractor: Optional[Type[ExtractionModScheme]],
+                 *,
+                 function_sources: List[DBModScheme | str | Formatter],
+                 extractor: Optional[Type[ExtractionModScheme]] = None,
                  analyzers: List[Type[AnalyzerModScheme] | partial[AnalyzerModScheme] | str | Searchable],
                  searcher: Type[SearcherModScheme] | partial[SearcherModScheme]):
         """
         Constructing a system runnable instance for a given combination of modules.
-        :param if_srcs: A list of DBModScheme instances used as sources.
+        :param function_sources: A list of DBModScheme instances used as sources.
         :param extractor: An optional ExtractionModScheme type used to extract shards from the CMFs.
         If extractor not provided, analysis will try to read from the default searchables directory.
         :param analyzers: A list of AnalyzerModScheme types used for prioritization + preparation before the search
         :param searcher: A SearcherModScheme type used to deepen the search done by the analyzers
         """
-        if not isinstance(if_srcs, list):
+        if not isinstance(function_sources, list):
             raise ValueError('Inspiration Functions must be contained in a list')
 
-        self.if_srcs = if_srcs
+        self.func_srcs = function_sources
         self.extractor = extractor
         self.analyzers = analyzers
         self.searcher = searcher
 
-        if not self.if_srcs and self.extractor:
+        if not self.func_srcs and self.extractor:
             raise ValueError('Could not preform extraction if no sourced to extract from where provided')
 
     def run(self, constants: Optional[List[str | Constant] | str | Constant] = None):
@@ -165,14 +166,14 @@ def __loading_stage(self, constants: List[Constant]) -> Dict[Constant, List[CMFD
         :param constants: A list of all constants relevant to this run
         :return: A mapping from a constant to the list of its CMFs (matching the inspiration functions)
         """
-        if not self.if_srcs:
+        if not self.func_srcs:
             return dict()
 
         Logger('Loading CMFs ...', Logger.Levels.info).log()
         modules = []
         cmf_data = defaultdict(set)
 
-        for db in self.if_srcs:
+        for db in self.func_srcs:
             if isinstance(db, DBModScheme):
                 modules.append(db)
             elif isinstance(db, str):
diff --git a/examples/main_example.py b/examples/main_example.py
index 769a511..447c397 100644
--- a/examples/main_example.py
+++ b/examples/main_example.py
@@ -43,8 +43,8 @@ def trajectory_compute_func_analysis(d):
     )
 
     System(
-        if_srcs=[pFq(log(2), 2, 1, -1)],
+        function_sources=[pFq(log(2), 2, 1, -1)],
         extractor=extraction.extractor.ShardExtractorMod,
         analyzers=[analysis.AnalyzerModV1],
-        searcher=search.SearcherModV1
+        searcher=search.GeneticSearchMod
     ).run(constants=[log(2)])
diff --git a/tests/test_system_logger_integration.py b/tests/test_system_logger_integration.py
index 0accbb1..5dfa239 100644
--- a/tests/test_system_logger_integration.py
+++ b/tests/test_system_logger_integration.py
@@ -22,7 +22,7 @@ def test_system_run_calls_logger_start_run_once_per_run(monkeypatch, tmp_path):
     monkeypatch.setattr(system_mod.extraction_config, "PATH_TO_SEARCHABLES", str(searchables_dir))
 
     system = System(
-        if_srcs=[],
+        function_sources=[],
         extractor=None,
         analyzers=[],
         searcher=cast(type[SearcherModScheme], _DummySearcher),