Walking down Eighth Avenue a few weeks ago, I made sure my backpack was fully zipped shut. Inside was a modest stash of pot, bought just an hour or so earlier. A friend knew someone in that world, and after an introduction, then a quiet, discreet meeting, I was on my way to the subway. Never before had I walked through Midtown Manhattan with it on my person. There were four cookies in vacuum-sealed pouches — “edibles” is the technical term — and then a few pinches of what was described as “herb.”

The innovations of Michael R. Bloomberg as mayor are legion, but his enforcement of marijuana laws has broken all records. More people have been arrested for marijuana possession than any other crime on the books. From 2002 through 2012, 442,000 people were charged with misdemeanors for openly displaying or burning 25 grams or less of pot.

I wasn’t sure about the weight of my stash — although a digital scale was used in the transaction, I didn’t see the display — but it didn’t feel too heavy.

Still, I wasn’t about to openly display or burn it.

IT turns out that there was little to fret over. While scores of people are arrested on these charges every day in New York, the laws apparently don’t apply to middle-aged white guys.