Child Labor Laws Anyone?

   I'm curious....how do they know something is "safe for ages 6mos +" or "for ages 18-24mos"?  Do they have test babies that have to play with these things until some one gets hurt?  Or what about the "brain toys"?  Do they get a bunch of 6 month olds to play with a toy for months to see if they grow up to be stupid or smart?  I can hear it now, "Oops, well guys it looks like Bingo the Bear causes stunted motor skill development in this group; let's try the 9 month olds."  I mean think about it! In order to determine something is age-appropriate or safe, they have to test it on babies right?  And the way they determine something is not safe for a certain age must be when some one gets hurt.  "Oooooh, looks like that robot arm can fit in a 8 month old's nose.  Back to the drawing board." 
      I'm very concerned about this!  Mommy said she's sure they have safe ways of determining these things, like in the movies when a dog gets run over by a semi, but "No animals were harmed in the filming."  Ummm....yeah.....ok.......not comforting Mommy.