Why does weed affect your short term mem?

[the image reaper]

the real question is, why do people instantly dispute all the negative propaganda they are fed and absorb all the positive?

GOOD POINT ! ... I had to quit smoking pot for a couple years, due to job, and after about 6 months, I 'felt' smarter, my memory improved 1000%, and kept improving ... seriously, my thinking processes really improved greatly... now, Im smoking heavily again, and feel slightly stupid when stoned ... of course, that won't be noticed in here ...