Not to worry. When I was young I had no idea about how rotary dial phones worked (still don't, frankly) or FM or AM radio, despite my radar technician flatmates

Not to worry. When I was young I had no idea about how rotary dial phones worked (still don't, frankly) or FM or AM radio, despite my radar technician flatmates trying to tell me about it. And lots of other things. But I did learn about lots of other things - for example I can write in assembly language for half a dozen different processors, and I know how to make a Gram stain for diagnosing bacteria. You learn what you need when you need it.