> ... in my 20 years doing this type of role Same here. I started as a webmaster. > The problem is there's a similar appearing archetype to "jack of all trade

> ... in my 20 years doing this type of role Same here. I started as a webmaster. > The problem is there's a similar appearing archetype to "jack of all trades" the "always reading never doing" person. A good metric I used is to check their Github profile. I believe a "doer" jack of all trades will have to experiment often. But I agree that they are really really hard to find! > But even if they spent serious time using a technology, they still need 4 hrs of work in it to look surface competent again This is true, and even more so when you switch between very different fields. For example, I must admit that it takes a little while to go from a UX design "period" using Figma all day to a DevOps "period" to build AMI's and navigate through AWS (which is a FT job in itself!). And the more fields/subfields you practice, the more likely you are not practicing one for a while; so the time switching becomes a burden and comes with an overwhelming feeling. On the other hand, Jack of all trades have an incredible advantage in seeing the big picture and visualize the intersection of each field at a very deep level. For example, a marketer with engineering knowledge will think of growth hacking strategies a specialist marketer would never think of. Or a designer with engineering knowledge can design UI's that can be built efficiently.