The Hitchhikers Guide to Coronavirus is the ultimate crowdsourced coronavirus handbook. It has 18 editable sections, 100s of projects, 18 chat threads and has received 126k views in the last week.

The shuttle loom was invented in 1733. It hugely increased the productivity of weavers, but required no new tools or materials. It could have been invented any time in the previous 5000 years, but it wasn’t. Why?