I'm also a Numbers fan. I actually like using Pages too. When I use Microsoft Office, I remember its power but I also find it relatively difficult to use.
I did the same (although some years after the acquisition) and had a similar experience, though over the years I've managed to claw back some of the friends I lost. Though it's still hard to communicate with them.
I tried Em D Am6 Cadd9 which is a kind of stock alternative rock / indie rock jangly guitar progression.
The variations thing suggested some really jazzy chords that didn't preserve the vibe.
The author is Larry Paulson - my (and I'm sure many others' on HN) Foundations of Computer Science lecturer at Cambridge back in 2009. I wonder if I still have a little credit at the front of the lecture notes (for spotting some typo or other). It's foreboding to see him writing up his "memories" like this.
Being woken up into the world of functional programming (via Moscow ML) - after learning to code as a kid in JavaScript and Visual Basic 6 - was priceless. And in a way it led to my fascination with Scala, which has made the transition to Swift much easier.