Probably should have replied here rather than above. Anyway, as I mentioned there, there is a ton of hard data showing mono-cultures generally being outperforme

Probably should have replied here rather than above. Anyway, as I mentioned there, there is a ton of hard data showing mono-cultures generally being outperformed by diverse groups. Lots available as public research, you just have to look for it. You may have to pay for some journal access though. Hiring-what-you-know has been pretty much nailed down as a major mistake with hard data, but is also one that most people make.