A little birdie... who talks to other little birdies... who see other little birdies on the same flights home... and those birdies tell em of other little birdies that work this way or that ... so this birdie says to herself ... "well i know x little birdies and of those x little birdies... x/2 are type 3... so its a probable big assumption. So this got me curious and I met another little birdie... one I know and trust and love so much *cough*... and I asked her ... How many of all these little birdies do you think are type 3... and do ya know what this little birdie said... about half of um....