Efficient for what, though? It's certainly faster for rote recording of information, but I learn complex information in less time when I hand-write it out. Also

Efficient for what, though? It's certainly faster for rote recording of information, but I learn complex information in less time when I hand-write it out. Also, you have to be really well-practiced in LaTeX math packages to type arbitrary math well. Hand-writing math is much more straightforward with limited learning time.