99% Invisible: Details
On the May 22, 2015 edition of 99% Invisible:
It’s a stick with bristles poking out of it. It doesn’t even qualify as a simple machine, but the careful thought and design that went into the creation of the modern, angled bristle, fat handled toothbrush shows just how much brain-power goes into something that is designed to simply work well and not be noticed all that much (until it’s time to buy the next one).
Friday at 7:45am & 4:45pm and Saturday at 8:35am.