hello 👋 the other day, I got a request to start a friend streak on Duolingo it's the first time this has happened in a while I already had 4 on the go -- and not one of them looks like ending any time soon 🔥 anyway, I duly accepted (it was from a fellow Matt, after all)... but I can't lie -- it did get me thinking... these friend streaks... what are they all about? 🤔 they've been a thing for well over half a year at this point... and they're pretty much exactly the same as when they...