Re "Should we tax pot?" Opinion, Dec. 4 Patt Morrison tells us that a Rand Corp. researcher estimates that if pot were legal, 60% to 70% of the population would smoke it regularly, as its addictive potential has supposedly been underestimated. Yet pot is legal or decriminalized in some countries -- the Netherlands, for example -- and rates of regular use in these countries are lower than in the U.S., where pot is illegal. Was Morrison high when she wrote this column? Jonathan Taylor La Habra [end]