Whatâs Good About Tech Bubbles Weâre seeing a mania for wacky tech ideas. But tech bubbles arenât necessarily the worst thing. Credit...Nicholas Law This article is part of the On Tech newsletter. You can to receive it weekdays. Letâs talk about what Britainâs bicycle bubble more than a century ago has in common with current crazes for nonfungible tokens, technology start-ups and electric vehicle companies. Weâre more than 10 years into a technology gold rush that in some corners makes absolutely no sense. If and when the zaniness fades, people could lose a fortune. But collectively, tech manias do bring some good. As my colleague Erin Griffith said: âBubbles, while messy, lead to progress.â