Lifting this conversation from the game thread because this topic will have more legs, I suspect
i know you fellow X’s & O’s guys noticed tonight but joe and the players made another big adjustment, this one on offense. after two consecutive series of teams beating us down with the high PnR to get the switch they wanted against Al, the C’s returned the favor tonight.
Tatum and Rob were very disciplined against embiid in the high PnR switch, and JT was absolutely abusing him. JT mixed in some aggressive drives to the rim, along with some threes when the exhausted embiid sagged on the switch. loved seeing the C’s being disciplined on offense, exploiting a sixers defensive weakness.
praise where praise is due.
Yup, learning late is better than not learning at all 
Also of note defensively - having Horford faking a drop and then following Embiid while having Timelord on the floor to cover the ball handler seemed to really stymie the Sixers' gameplan. Which is weird, because the Celtics' defense last year was essentially driven by this principle, so it's not like the Sixers wouldn't have known it was coming.
On offense, it's an interesting thing -- for the second half of the season there's been a lot of complaints about Mazza's "post-playcalling" offense (not to be confused with calling plays that start from the post), and while I get it on an intellectual level*, it's prone to be littered with 'bad' plays because when our guys aren't in rhythm they generally aren't the kind of players who make the extra pass or the right play.
At this point we've spent so much digital ink talking about this, but I wonder if there's a happy medium to be reached here. Even with a historic game from Tatum, Tenn et al aren't wrong when they say that our 'offense' isn't plays, as such - that's by design, but it's not an unreservedly good thing. Same with the super tight rotation.
* The basic logic of "the defense knows what Tatum & Brown are going to prefer, and they will plan to take those shots away, so we will diminish playcalling to avoid playing to the defender's strength" is not terribly dissimilar in some ways to the triangle - Mazz describes it as a series of "if-than" decisions in the open court, rather than set plays - but, like the triangle, it looks pretty braindead when it's not working.