Excellent insight. The hammer doesn’t build the house and neither does the muscle. It’s the mind that counts.
Of course, it is important to understand that most Marxists do not believe that, they believe that is only the muscle that builds it counts for anything.
In their world, the mind that conceived it and told others how to do it has no place.
Marxists don’t understand that mind without muscle is limited, but even worse, they don’t realize the muscle without mind is utterly worthless.