Who's right, who's wrong in Craps Betting

Dear Mark, A simple question I realize, but, exactly what is the difference between a right and wrong bettor in craps? Gina M.
No question for this column is too doltish, Gina, especially when your hard-earned money is in play. The players who do not ask questions are the ones that bewilder me. You folks know who you are. You will anatomize Consumer's Report looking for the best value in paint, but in gambling, Blithe Spirit takes over and leads you into bets that ... Holy Cow! If you had doped out the true odds ahead of time, you would probably have booked a holiday to Disneyland instead.
Gamblers are of two breeds. They either a) know the game intimately, or b) they haven't got a clue. Asking questions puts you on the A list.
Anyhow, enough venting. A right bettor is a player in craps who makes pass line and come bets. A wrong bettor is a player who bets against the shooter and with the seven. Her bets are on the don't pass and don't come wagers.
By the way, Gina, right or wrong, both right and wrong bettors are making some of the best wagers in the casino.

Dear Mark, My friend wants me to invest £1,000 in a blackjack system that he claims will absolutely show a profit every time you play. Is there any surefire way of showing a profit every time in blackjack? Dale G.
Hmmm, I think we all know your friend, the guy who was born on third base and thinks he hit a triple. Be wary of too-good-to-be-true systems. They ARE too good to be true. The only surefire way I know of for showing a profit in blackjack is getting your hind quarters off the stool as soon as you're ahead and leaving the building.