TP to Incoherent. Look Perkins has been one of my all time favorite Celtics, I love the guy. But...
The "facts" are that this team was 41-14 without Perkins this year ( he played about 6-7 games ). So we can basically say we're 40-14 this year without Perkins. 
Keep in mind also...Jermain out all season, DWest out most of the season, Daniles missed games, Rondo and KG missed 10 games each, Shaq's been in and out....etc,,,
And we're still 41-14 without Perkins? Our Chemistry is fine.
KG, Pierce, Ray and Rondo is why we are so good. It's just like Jordan and Pippen, you can cahnge the pieces around them with equivalent, if different pieces, and they will be just as good because of Jordan and Pippen...
I absolutely hate to see Perkins go, I just hate it. But I understand the trade.