I was reminded of these the other day when I stumbled over the warped surface of the floor at an underground bowling alley in Minneapolis. And I thought, those glasses really do a poor job of simulating drunkenness. I expected, after using those glasses, that as soon as I had a beer things in my visual field would get blurry and hard to distinguish, and curve into each other, and overall distort in wild, unpredictable, frustrating ways. In fact, that is not what happens. These glasses poorly simulate the effect of alcohol on your vision.
However, what those glasses do well is simulate how difficult it is to walk when intoxicated. So, seen functionally, the crazy lenses and a crapload of alcohol are basically black boxes inserted somewhere into the process of walking, and the output of the system, stumbling across a room, is similar for these two black boxes. And in fact, the glasses really clobber the entire system by appearing essentially at the whole start of the process, the input to the system, and destroying it beyond repair.
While this is a good design for a system that is meant to discourage children from drinking, it unrealistically represents the entire picture of drunkenness. The lesson could be made more realistic in the following ways: