[jermaustin1]

Anyone who has tried it and doesn't use it, might experience it different than people who use it every day. I've known new users who couldn't walk straight after a bowl, and "pro" users who smoke 2+ grams a day and just keep on trucking. It comes down to tolerances, and probably also your mind adjusting to how it interprets the world under the influence of marijuana which is a mild psychedelic.

Also going to add that the time-dilation effect of marijuana will definitely make you feel less productive but you will realize only 1/3 of the time you thought passed has passed. I'm sure this might play into some of the findings.