The above is a photo of Clive Sinclair (later Sir Clive) with one of his inventions, the miniature TV (1966). Life magazine dubs it one of "30 Dumb Inventions" (slide 18 in the sequence).
Oh, yes? iPhone, anyone? (and see slide 26, to boot).
The difference between mockery and admiration is often a matter of timing (think of da Vinci's helicopter, or Noah's Ark). It's Sinclair's misfortune that, like many a genius, he led the market by too great a distance. But without people like this, we wouldn't have got here.