if you look closer, not every invention was useless. Some of them almost worked. Some were clever upgrades. And a few; rare cases, that actually changed the whole show. Join this channel to get access to perks: Copyright Disclaimer: Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted.