It's the nature of the word "can't" which allows a single counterexample to debunk an argument.
If the grandparent poster really meant "It is quite difficult", then it seems that we have arrived at a more accurate representation of the original argument, and thus 0xbadcafebee has been contributing greatly to the discussion.
If the grandparent poster really meant "It is quite difficult", then it seems that we have arrived at a more accurate representation of the original argument, and thus 0xbadcafebee has been contributing greatly to the discussion.