That's three biggies.
The situation hasn't changed in the years since this thread was started.
I'll add one more, even though the intention is to find the fewest flaws. This one generates most of the rest beyond those big three:
...thinking skiing is all about using skis to resist gravity.
Also look at the "pervasive problems" and "pervasive problem solutions" threads that were generated this last season. There's a lot covered in them.