Mass adoption happens when enough people feel safe following the signal. I realized something when discussing my recent missive about wired earbuds coming back. I say “permission” a lot, but it’s not really the right word. This isn’t permission from your Dad (which you might adhere to selectively). Consumers aren’t waiting on literal approval from authority figures like teachers or lawmakers, except when it comes to regulated products. What they’re looking for in this context is social...