> Now, why doesn’t bytes.Reader implement Peek? It’s just a byte slice, it’s definitely possible to peek ahead without altering stream state. But it was overlooked, and instead this workaround is applied.

When I first looked at Go, it seemed to have far too many layers of abstraction on top of one another. Which is so ironic, considering that's one of the main things it was trying to fix about Java. It ended up becoming the thing it fought against.