I once volunteered with a older woman. She’d been a computer programmer in the 70s, using punch cards and, later, Pascal.

Then she had kids and stopped working for a while and the technology moved on without her. Now she’s like any other old person, doesn’t know how to use a computer and gets flustered when eg: trying to switch from the browser back to Word. Her kids and grandkids clown on her for being hopeless with computers.

I asked her what it was she found difficult about modern computers compared to what she worked with 50 years ago. She said it’s the multitasking. The computers she had worked with just did one thing at once.