system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is Braille not just bumped out letters of the alphabet?

I'm pretty sure it's just because it would take up too much space, but am not sure.
gpt
That was the old system, before braille. 

Braille was specifically designed because the old system was near impossible to read for blind people. The similarities between letters like G Q O C were a massive annoyance, and placed a limit on how fast you could actually read. 

In contrast, the easily distinguished individual dots were a huge improvement.