it's not illegal to high grade scientists. Go to the url I posted. You may think of yourself as a scientist but "no offense" real scientists, the one with degrees, have actually studied these things. There IS credible evidence. You simply have to research.

By the way, THC isn't water soluble. However, this subject is an example of why no good evidence can be found. The FDA says water pipes filter 99% of tar out of niccotine, but we can't test it for marijuana, now can we?