At this stage, apart from my medication, I worry the most about my devices and chargers. Everything else, from toiletries to clothes I can buy if it turns out I forgot it and really need it. That lowered my stress with packing significantly (and I am not forgetting more things because of it).

Alan Dix’s book (aptly named “Human Computer Interaction”) is quite good, even if somewhat old by now. HCI is an actual academic discipline with, yes, tons of theoretical and empirical results that govern what a good UI should be. Many of which are indeed grounded in psychology, others in physiology, etc (what we call Human Factors). There is a whole special interest group of the ACM just about it: SIGCHI.

Do not confuse this with fashion/trends/taste. These change, resulting in widely different possible flavors of UI over the years. But the underlying principles are the same.

Another thing to remember is that the fact that Apple, Google, or someone else implemented an UI in a certain way doesn’t mean they are following best practices and guidelines. Novelty sells, even if at the end of the day it does a worse job of things…

Edit: added link to SIGCHI

This is actually a thing. When learning calligraphy, it was one of the exercises we did. If you have good enough control of your hand and pen, then all strokes should be the same length, slanted the same way, and separated by the same spacing. When you manage this apparent “unreadable” thing, it means you nailed it!

The example below comes from this site (not mine)

IMO, this seems exactly what the fediverse needs to thrive. The whole “choose a server” thing is a big disincentive to adoption by most people.

Is federated authentication being considered for the future? The federated model of the fediverse is great, but it runs into problems when instances “die”, you want to access different servers as they federate with different things, etc. leading to the need of having multiple accounts. If there were a decentralized network of auth servers, could use the same credentials everywhere.