67. Phillips Head
A demonstrably better idea is, surprisingly, not immediately accepted.
Imagine being the American inventor Henry F. Phillips, who in the early 1930s dreamed up the now ubiquitous Phillips head screw and screwdriver. His invention was demonstrably better than the clunky slotted screw convention that had preceded it. As you may be reminded when you still occasionally encounter the old slotted variety, the driver keeps slipping out of the slotted screw, causing you to interrupt your work to mutter colorful imprecations. The Phillips head screwdriver, on the other hand, is self-centering and stays in.
The new invention was hands ...
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