1. It's random
But importantly number 2 is that when you subtract 100-47 you get 53. There's a small probability (47) that Valve won't mention hl3 but there's a high probability (53) that Ep3 will be mentioned
I mean think of it valve is noticing how much the community is boiling over, we are wanting news, screenshots, trailers ANYTHING to feast on. We've been eating on lies, concept art, hidden details and false args from Spuf, facepunch and reddit. Everyone is going hungry and valve knows it so there may be an announcement this year.
Valve did reveal that they feel awful for keeping their fans deprived on episode 3 information but they're only doing it not to hype up us so much. E3 has a high chance yes but do remember valve could be doing other things.
The numbers are random, but it makes sense when explained.
I feel bad for VALVe, especially the normal people who are working on it, imagine the stress and pressure knowing that you are working on the most awaited and acclaimed game's sequel, and can't say shit without getting fired or worse.
them for the ability to hold off for so long.