What was your biggest "wait, what?" moment when learning Mojo?

What was your biggest “wait, what?” moment when learning Mojo? :mojo: Share your feedback and shape how the next generation of developers learns Mojo!

I don’t know if it counts but Max running inference on a heterogenous HPC cluster was insane to see live and it got me to “chase the dragon” of the same type of performance for geospatial science libraries that I want to accelerate.