If there were no predators they would overpopulate (like us humans have). It would also mean the things that were once predators would die off, leaving only the producers and primary consumers to run the world (so pretty much the vegans/vegetarians and anything that doesn't eat meat, as well as plants).
Answer: I´m not following you. You mean like cheating while I´m doing my job (predict)?
Explanation: Working in the stock market might be classified as "it´s a dirty job, but someone has to do it", and it doesn´t matter. There´s no such thing as cheating or playing dirty. Earning your salary by predicting other people incomes an outcomes it´s just as any other job, and the position or situation of those people, it´s just a part of your job.
I am in aware of this question
You mean what possible advantage could Oligarchy have?
Oligarchy could mean that people in power will have good education and for example won't be manipulated by populists. For example often people choose their representatives based on very little information, and in an oligarchy, where a small portion of a society (the riches and best educated) rules, it could be more likely that the rulers will have the necessary education and preparaation.