All of the Big-O notations can be considered to have a bar.
When looking at a Ω, the bar is at the bottom, so it is an (asymptotic) lower bound. When looking at a Θ, the bar is obviously in the middle. So it is an (asymptotic) tight bound. When handwriting O, you usually finish at the top, and draw a squiggle. Therefore O(n) is the upper bound of the function.
Software should be sold for a fixed price per version.
I’m referring to software like an app, not services. Subscription models make sense for websites and services that manage user data, as they incur ongoing maintenance costs. But an app, like a note-taking or to-do app, should not come with a monthly subscription plan.
It’s obvious, yet reality rarely reflects it.

Every now and then, I jot down a few thoughts, sometimes on paper. Some are worth sharing but don’t justify a full post or article. This will be their home, inspired by macwright.com/micro.
It’s just another folder in my Obsidian vault, anyway.