A great technology demo can be a fantastic way to probe product-market fit, even before anything is actually built.<p>What early stage demos can you recall which made a strong impression and convinced you to learn more about the incoming product?
Mother of all demos by Doug Englebart - <a href="https://en.m.wikipedia.org/wiki/The_Mother_of_All_Demos" rel="nofollow">https://en.m.wikipedia.org/wiki/The_Mother_of_All_Demos</a>
the twilio demo gets mentioned now and again -- although that's demoing tech that exists, not before anything is built.<p>new york tech meetup, 2010: <a href="https://www.youtube.com/watch?v=-VuXIgp9S7o">https://www.youtube.com/watch?v=-VuXIgp9S7o</a><p>previously: <a href="https://news.ycombinator.com/item?id=11985368" rel="nofollow">https://news.ycombinator.com/item?id=11985368</a>