Comment by noduerme
I went to a speed dating thing once that tried to incorporate its own (clearly homemade) tech stack into the experience. Every few minutes you'd get a text telling you who to find next... to look for the person in the red scarf or cowboy boots or something. By the time you found them and found somewhere to sit, you had a few minutes to talk.
It felt a bit unnecessary. In any case, maybe it was just how totally random in age and interest the people there were, but the result wasn't like cramming 15 online dates into the span of a single one. It was more like 15 conversations with people I would never have had the slightest impulse to contact via an online dating app. Most of the conversations had what felt like a comfortable mutual vibe of "we both understand we could not plausibly be attracted to each other." Then again, in online dating, I've come to realize that most guys incessantly swipe right, while I almost always swipe left.