> As means per. Not exactly. You can use each one alone in this context, but they don't quite mean the same thing. "As predicted" means something like "In the

> As means per. Not exactly. You can use each one alone in this context, but they don't quite mean the same thing. "As predicted" means something like "In the way that was predicted". "Per my prediction" means "According to my prediction". As you noted, the combination doesn't really make sense: "In the way that according to". But it's an idiom. People say it just because they've heard others say it. The Merriam Webster definition for "per" (sense 3) says "according to — often used with as". Like many idioms, it doesn't necessarily make sense if you break it down. https://www.merriam-webster.com/dictionary/per https://www.merriam-webster.com/dictionary/per