Are Physicists losing their grip on reality?

I'm sure that physicists are gradually loosing their grip on reality. What's really loosened the grip is this dimension thing. In the past I could go along with the idea that there may be many additional dimensions that we just can't see because they bend in upon themselves in a space somewhere around the Plank length (smaller than very, very small).  Various numbers of these diminutive dimensions have been bandied about. People like Lisa Randall, apparently a leading US physicist in the dimension game talk of various numbers of these , from a dozen or so to "many".

Giving grudging acceptance to these enigmatic dimensions was easy, however, when no one was ever likely to prove or disprove them, and if they did, it wouldn't have an impact on my Saturday afternoon beer, or anything else for that matter.

Now, however they're going too far. Now they're saying that the early universe actually had FEWER dimensions, and that at higher energy levels  (like maybe in the heart of the Large Hadron Collider) there also may be fewer, ( there really are only 3 aren't there?, 4 if you count time). This characterizes a universe in which the most fundamental characteristic (including my most fundamental characteristic) may be a bit footloose. Evanescent, if you prefer. How, in a 2 dimensional universe, could you ever get beer into a can? Or, assuming the beer was already in there, how would you get it out?  And furthermore, if time were to be the unfortunate dimension to be booted into the void, what would keep everything from happening all at once? Or having happened all at once? ("Once" and "happened" being  rather nebulous concepts in that event).

Nevertheless, if you want the physicists' spin on it, check out this article:   http://focus.aps.org/story/v27/st10