nige1, on 2013-September-06, 14:05, said:
IMO EW might well agree to bid differently over weak-raises and game-tries. Playing
Precision, North's inaction is also suspicious. If he believes his own explanation of South's bid, then how can North pass with 13-16 HCP and a
♠ stop? Trinidad's comments may be illuminating

So, here are the $0.02 that you asked for:
North's inaction is perhaps suspicious. However, though North would want to force to game, I can understand it if North doesn't know very well
how to proceed. The auction is already at 3
♥. (I would bid 3
♠, but I wasn't North.) He wants South to bid 3NT, if South has a heart stop, but how can he get South to do that? And 5
♦ may still go down. "Perhaps", North reasons, "pass is best. South knows that I am 11-16. If South has a clear 3NT bid, he will bid it and make it. If he has the values to try 5
♦, he will make that too. Perhaps we will miss a game because of my pass, but if partner is minimal, that is not so likely and maybe we go plus defeating a heart contract."
Rik
I want my opponents to leave my table with a smile on their face and without matchpoints on their score card - in that order.
The most exciting phrase to hear in science, the one that heralds the new discoveries, is not “Eureka!” (I found it!), but “That’s funny…” – Isaac Asimov
The only reason God did not put "Thou shalt mind thine own business" in the Ten Commandments was that He thought that it was too obvious to need stating. - Kenberg