Two hyphens mean the start of a comment. That way the rest of the SQL syntax is basically ignored, so your DROP TABLE Students; is actually applied without errors.
Saying having a high IQ makes you smart is like saying being strong or fast automatically makes you good in sports. It obviously helps but it is one factor amongst many.
The real reason is probably because they are cheaper, and because with a lot of providers you pretty much don't have a choice. My girlfriend needed a new phone. Her choices were either an iPhone (most expensive), several different android devices (from free with a contract to almost as expensive as an iPhone), or a blackberry. She didn't need a smartphone but ended up with an android (still stuck on 2.3).
I never said it was a mature thing to do ; I'm saying it isn't sexist. I can't be bothered to quote wikipedia or a dictionary for a definition of the word 'sexist'.
Yes, it refers to big female breasts ; how is that sexist? If it somehow read 'BIG BICEPS' would anyone care?
Actually we probably would. But wal-mart founders would only be multi-millionnaires instead of bilionnaires.
Because I log 100% of the hands I play, and so do every pro/semi-pro players. It's then trivial to perform statistical analysis (the softwares logging the hands are made precisely for that). With thousands of players doing this, it doesn't take long until we know something is up. Most cheaters get caught. Or they aren't cheating good enough to affect our bottom line.