But he also does not have infinite engineering resources at his disposal. I expect that a lot of the designs are probably somewhat simplistic compared to the ba

But he also does not have infinite engineering resources at his disposal. I expect that a lot of the designs are probably somewhat simplistic compared to the battle-hardened implementations in common use today. It doesn't mean Rich Hickey was wrong; merely that we are seeing only the ultra-clean design now. After Datomic takes off and has a lot of production users in demanding environments for 5-10 years, I doubt the design will be quite so clean.