Quote from Tums:
...
if IF1/IF2, etc., is so good, so useful, so important, in the context of what we doing here, don't you think Spyder would have introduced it in the syllabus?...
/B]
I'm not attesting to their usefulness but it was previously stated that it would be discussed this month so some significance must have been attached at that point. I guess Spyder determined since then that is wasn't that important.

I also caught part of your first trade but only for 1.5 points.