You might be wondering why it’s taken so long since the previous edition of my learning notes. First, because of the COVID lockdown, we decided to spend our time serving the community with our free ‘miniMOOC’ on Online Social Learning. Then, in late September 2020, I was hit by a severe stroke and was in hospital for half a year. I needed to learn to swallow and walk again for the second time in my life. I’m very grateful to have recovered quite well after nine months.