concurrency.md

@@ -104,9 +104,7 @@ The only differences between implementations are in the granularity and position
 - For yhc,  yield is inserted after some count of bytecode instructions.
 
 
-Arguably, Hugs has made the wrong choice from a fairness point of view,
-but moving the position of the yield, or inserting them more frequently,
-should not be a big deal.
+Arguably, Hugs has made the wrong choice from a fairness point of view.  It would be possible to make Hugs yield more often, such as in IO-monad's bind operator, but even this wouldn't be quite enough for fairness, because a thread might hang indefinitely performing a non-IO computation.  Yielding outside of the IO monad in Hugs doesn't seem possible without overhauling the concurrency implementation completely.
 
 ---