As theoreticalphysics.se was closed and obviously isn''t continued further outside of SE, I was asking myself, how much experts (bachelor/master/phd) can a site like physics.se have at the same time contributing and therefore competing on reputation. I think this graduated established SE site has currently reached a limit of qestions/day (maybe increasable to 40questoins/day but thats probably the maximum).
Expert user compete on reputation (gamification), gainable reputation per day is limited of course by questions/day and amount of competitors. If the average amount of rep a user can gain during, say 1-3 months, is low and he therefore slowy gains privileges and reputation (moving the ladder up like in a scientific community), he decides to either only read ( take for example me lacking time as a professional and family father and always too late seeing a unanswered question here (most seem to be well answered within 1-2 hours which is excellent community property), comment here and there, leave the site, or gaiming it :)
This is all fine, no critics, thats how SE was designed, while there are probably thousands of java experts in the world, probably only 100-1000 game on stackoverflow (the majority is passive), as there arent more questions and rep to feed all. But the question I asked myself therefore is, does that mean, that the diversification and level of very specialized java and physics questions (research, practical, laboratory questions) is therefore also limited to a maximum value and very highly specialized sites like theoreticalphysics or theoreticalbiology cannot work per se, as you can never attract the amount of experts and their expertise on measurement techniques etc. It needs to be able to answer very specialized questions in such fields.
The explanation of the SE masters for closing appliedphysics, nanotechnology, experimental physics proposals was, this topic already exists because of physics.se. But following the reasoning above, I dont see how enough professional experts and expertise will ever contribute to phyiscs.se competing on reputation to answer very tricky and localized question with the current growth and reputation model. I was against moving astronomy and astrophysics in physics.se. Most of the top astronomy.se user left the site, didnt register to phyiscs.se which affirms my hypothesis above, theoreticalcomputerscience.se wouldn't work and attract so much experts when integrated as tagged-only questions into SO. More competitors and limit of attention.
What are your thoughts on this, I dont see how such questions and subfields can organically grow on physics.se due to limited rep, experts and attention these topics get. Resolving this problem by better and level-tagging also doesnt work. area51 proposals are closed. So take open-source SE software clone and do it yourself like biostar, mathoverflow or artificalintelligence.osqa? I think there is limit of thematic broadness, when you can reach only higher quality by starting a smaller specialized community, feeded by experts coming from the established site like SO --> TCS. But for much more broader and trickier fields like physics, funnily this is forbidden.