I think about technical skill development as a diverse portfolio. I spend a majority of learning budget on fundamentals, mostly overlearning core knowledge and

I think about technical skill development as a diverse portfolio. I spend a majority of learning budget on fundamentals, mostly overlearning core knowledge and skills. I spend a small amount of my learning budget on specific techniques, tools, and packages that currently popular. A very small fraction of my learning budget is spent on high risk / high reward elements.