diff --git a/preludes/ruby.rb b/preludes/ruby.rb
index af3f8721d..37c7e6000 100644
--- a/preludes/ruby.rb
+++ b/preludes/ruby.rb
@@ -1,3 +1,7 @@
+def require_dependency(path)
+  require_relative(path)
+end
+
 class Object
   def new
     self
diff --git a/src/Analysis/Abstract/BadValues.hs b/src/Analysis/Abstract/BadValues.hs
index a2d9c6407..efc3c55f7 100644
--- a/src/Analysis/Abstract/BadValues.hs
+++ b/src/Analysis/Abstract/BadValues.hs
@@ -34,6 +34,8 @@ instance ( Effectful m
             yield (Env.push env)
           (CallError val) -> yield val
           (StringError val) -> yield (pack $ show val)
-          (BoolError val) -> yield True)
+          BoolError{} -> yield True
+          Numeric2Error{} -> unit >>= yield
+          )
 
   analyzeModule = liftAnalyze analyzeModule
diff --git a/src/Analysis/Abstract/BadVariables.hs b/src/Analysis/Abstract/BadVariables.hs
index 75e7c57b7..a7a484fff 100644
--- a/src/Analysis/Abstract/BadVariables.hs
+++ b/src/Analysis/Abstract/BadVariables.hs
@@ -27,7 +27,8 @@ instance ( Effectful m
   type Effects location term value (BadVariables m effects) = State [Name] ': Effects location term value (m effects)
 
   analyzeTerm eval term = resumeException @(EvalError value) (liftAnalyze analyzeTerm eval term) (
-        \yield (FreeVariableError name) ->
-            raise (modify' (name :)) >> unit >>= yield)
+        \yield err -> case err of
+          (FreeVariableError name) -> raise (modify' (name :)) >> unit >>= yield
+          (FreeVariablesError names) -> raise (modify' (names <>)) >> yield (last names) )
 
   analyzeModule = liftAnalyze analyzeModule
diff --git a/src/Control/Abstract/Value.hs b/src/Control/Abstract/Value.hs
index 378a2463d..cb22e1b5b 100644
--- a/src/Control/Abstract/Value.hs
+++ b/src/Control/Abstract/Value.hs
@@ -189,20 +189,20 @@ class ValueRoots location value where
 
 -- The type of exceptions that can be thrown when constructing values in `MonadValue`.
 data ValueError location value resume where
-  TypeError              :: Prelude.String -> ValueError location value value
   StringError            :: value          -> ValueError location value ByteString
   NamespaceError         :: Prelude.String -> ValueError location value (Environment location value)
   ScopedEnvironmentError :: Prelude.String -> ValueError location value (Environment location value)
   CallError              :: value          -> ValueError location value value
   BoolError              :: value          -> ValueError location value Bool
+  Numeric2Error          :: value          -> value -> ValueError location value value
 
 instance Eq value => Eq1 (ValueError location value) where
-  liftEq _ (TypeError a)  (TypeError b)                          = a == b
   liftEq _ (StringError a) (StringError b)                       = a == b
   liftEq _ (NamespaceError a) (NamespaceError b)                 = a == b
   liftEq _ (ScopedEnvironmentError a) (ScopedEnvironmentError b) = a == b
   liftEq _ (CallError a) (CallError b)                           = a == b
-  liftEq _ (BoolError a) (BoolError c)                           = (a == c)
+  liftEq _ (BoolError a) (BoolError c)                           = a == c
+  liftEq _ (Numeric2Error a b) (Numeric2Error c d)                           = (a == c) && (b == d)
   liftEq _ _             _                                       = False
 
 deriving instance (Show value) => Show (ValueError location value resume)
diff --git a/src/Data/Abstract/Evaluatable.hs b/src/Data/Abstract/Evaluatable.hs
index d1e64fbb5..88508783a 100644
--- a/src/Data/Abstract/Evaluatable.hs
+++ b/src/Data/Abstract/Evaluatable.hs
@@ -15,6 +15,7 @@ module Data.Abstract.Evaluatable
 , evaluatePackageBody
 , throwLoadError
 , throwEvalError
+, throwValueError
 , resolve
 , listModulesInDir
 , require
@@ -95,6 +96,10 @@ instance Eq1 (EvalError term) where
   liftEq _ (FreeVariablesError a) (FreeVariablesError b) = a == b
   liftEq _ _ _ = False
 
+
+throwValueError :: MonadEvaluatable location term value m => ValueError location value resume -> m resume
+throwValueError = throwException
+
 throwLoadError :: MonadEvaluatable location term value m => LoadError term value resume -> m resume
 throwLoadError = throwException
 
diff --git a/src/Data/Abstract/Value.hs b/src/Data/Abstract/Value.hs
index fc67b7ed4..0aa986b64 100644
--- a/src/Data/Abstract/Value.hs
+++ b/src/Data/Abstract/Value.hs
@@ -259,7 +259,7 @@ instance forall location term m. (Monad m, MonadEvaluatable location term (Value
     | Just (Float    i, Integer j)  <- prjPair pair = f i j & specialize
     | Just (Float    i, Rational j) <- prjPair pair = f i j & specialize
     | Just (Float    i, Float j)    <- prjPair pair = f i j & specialize
-    | otherwise = fail ("Invalid operands to liftNumeric2: " <> show pair)
+    | otherwise = throwValueError (Numeric2Error left right)
       where
         -- Dispatch whatever's contained inside a 'Number.SomeNumber' to its appropriate 'MonadValue' ctor
         specialize :: MonadValue location value m => Number.SomeNumber -> m value