ALL these years, I thought the lyrics to Sam Cooke's What a Wonderful World was:
Don't know much about geography,
don't know much trigonometry.
Don't know much about algebra,
don't know what it's like through this world
turns out, now that our band is playing it, I find out it's about slide rules!:
Don't know much about geography,
don't know much trigonometry.
Don't know much about algebra,
don't know what s slide rule is for.