Here is my understanding: the wanting to be strong will be encouraged still, but for the sake of the state, not the individual. Now, if you are referring to selfishness:
Is selfishness genetic (like your buoyant example) or is it culturally developed?
Trotsky thinks it is culturally developed.
In this case, it is like hold a buoyant ball underwater, but the pressure of the water over time will eventually 'deflate' it enough it no longer needs to be held down.
Sidenote: I don't agree with propaganda as being the dependency of best form of government. Trotsky only want influence of selfless thinking (which propaganda probably would be used) and knew it would take time. For the best form of government, there was one more element Trotsky wanted: every nation in history needed religion on some way to stay connected.
The other way to eliminate selfishness was by implementing Christianity. In this sense, you no longer think 'I am so great,' but rather 'God, thank you for making me great.' It is selfless thinking and you remember that God could take away your gifts at any time. So, you use them to the best of your ability for the good of everyone else (see pauls letters on gifts of the spirit). Encourages you to help others=selfless as well.
--->Trotskey called true communism the system of God and Capitalism the system of the devil since it promotes selfishness.
Having said that: do you think the best form of government is one in which selflessness is the main influence? I am sorry I got so carried away with my other posts when this is the basic idea behind Trotsky: selflessness.
@revival. If this is true, then your conclusion is half right. The people are important for the government form to work, but it is also the leaders to make sure the principals are enforced.