Well, your options are: 1) Hire lots of people with same experience, but each of which spends lots of time trying to learn everything about everything. 2) Hir

Well, your options are: 1) Hire lots of people with same experience, but each of which spends lots of time trying to learn everything about everything. 2) Hire a bunch of people with different experiences and knowledge and pool their learning. They can and should also try to learn lots of stuff. You can eventually reproduce the necessary knowledge and skills with path #1... but it's not like you have that much time available to learn. Path #2 is much more efficient.