Mark Zuckerberg launched his new platform, Threads, this week. It's designed to knock Twitter - owned Elon Musk - off of its perch.
This story is a parable of our age. Men of unbelievable wealth and unbelievable power locking battle. Whoever wins, if anyone wins, it will have reverberations on our culture, on our politics, on the tapestry of our lives.
And Lewis also talks to the SNP leader for Westminster, Stephen Flynn MP, about his political make-up.