Turns out cops can still arrest you for having weed, even with a card if they're dicks. You need an attorney to help you out of jail or a ticket. I got caught in the central coast with a little less than an ounce, and I had to fight the ticket in court, which is actually a misdemeanor. When weed is only legal for a small amount of the population, there's nothing to stop local law enforcement from going into a house b/c a dog smells weed. The cop had no idea until after he was in (or maybe when your buddy went to jail in his case) that what your buddy was doing was legal. When cops cannot state (or feign) ignorance, then they have no grounds to barge into a house. Eliminating any chance of someone going to jail just because they smell weed.
I never said you could grow as much as you wanted. I actually said that the cop could get a warrant to search your house if you did that, and you would be fucked. All I said was that weed smell will no longer be a reason to invade a house, making the likelihood of getting arrested go WAY down. The whole dunce thing is superfluous man, please don't insult me for no reason.