In the early 2000s social media sites like Facebook and Twitter weren’t commonplace yet. Even text messages, at ten cents each, were something to be rationed. For many teenagers the primary means of communication outside school was AOL Instant Messenger (AIM). So when it was announced in October that they were shutting down AIM after 20 years, I felt a wave of nostalgia for the messaging app of my youth.

I'm excited to share the positive news and to be working on such an interesting project! I believe we have just begun to scratch the surface of applying category theory to understanding the universe around us and inside us. https://t.co/KgpHpkfEgA— Bruno Gavranović (@bgavran3) April 23, 2019