I'm a decently fast thinker but a relatively slow learner. I'm good at synthesizing information. It's because I tend to naturally doubt/resist new information and I need to see some proof or utility value before I can fully absorb it. Once I've absorbed information, I can recall it years in the future and can synthesize it with different related information.

I'm grateful for my slow learning because if I had just absorbed everything I was ever told on the first go, I would probably be crazy right now because of how many contradictions I've encountered in the information I've been presented with and how often I've had to re-evaluate my worldview...

You don't want to learn stuff based on what you learned first; what information you retain and decide to build upon should be about what best fits into your existing (hopefully gradually improving) world model.