Kid (10yo) is now old enough to start with this historical gem! #mathematics
@nilesh gear at the beginning is turning in the same direction as the last gear
@melroy Better than this:
@nilesh Yea that doesn't work well 😂😣
@nilesh @melroy They're demonstrating what not to do, right? Right?

@nilesh @melroy ooops!

Report to the mechanical engineering department for a swift remedial class, perhaps?