Matt is hands down the WORST TA I have ever had at Columbia. His lectures are disorganized, he knows shit about organic chemistry (one time he wanted to show us how to synthesize crystal meth only to forget exactly what crystal meth looks like), and he is one confusing individual. I actually stopped attending recitation after a couple of weeks because his explainations would always contradict Prof. Nuckolls and Matt was always totally clueless about what we were even doing in lecture because his ass was never in lecture! And he randomly grades problem sets and quizzes, you could miss one step of a mechanism or a synthesis and he wouldn't even give partial credit. Stay away from any recitation or class that Matt maybe be teaching because he's a poor teacher, can barely explain concepts and will just confuse the hell out of you.