ELI5: Why is there not just one universal coding language?

As the title says. My role is not data input/management however while managing my team I’ve put some things together and got this comment a lot. I sort of get it, and use the raw data instead now to calculate this but I cannot understand why it doesn’t work after …

ELI5: Why did we have to tune our TVs to channel 3 (or 4?) to use video game systems or VCRs in the 80s/90s?

ELI5 what has happened when someone dies of ‘old age’

Given the images coming from Syria and the Syrian diaspora around the world, I can't help wonder how people get the new flag so vast and in such great sizes.

ELI5: If there is no cellphone signal, how does the "emergency calls only" mode works?

As a lefty I was constantly having a hard time learning to write left to right as a kid. Righties seem to have it really easy. Right handedness is the overwhelming majority of people. Why did writing systems develop that write right to left? Seems more difficult to me.

ELI5 Why do we use pillows?