I was just watching the last 4 min with "Exit Music" and the Lyrics of the song perfectly fit the situation…When the songs plays "Wisdom Choke You" we see Finch, and we see Greer and the background plays "that you choke". Its perfect. Finch got choked by his altruism and Greer will be choked by Team Machine.

My reactions as the last episode progressed…
Collier wtf…shotgun…Rivera dead..
aah..boring flashbacks….
How to get a cycle during blackout By Mr.Hersh
Fusco the least intelligent but the most adorable cop…really "What machine" :)
and the second half started..
Whoah…wait wait..wth I just watched..
Everything makes sense now…
Un…