saketuec
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Essentially, if there were a system that could send information from the future to the past, the future agent would want to be "as discreet as" possible, while still achieving "nearly perfect" outcome. Note that the future agent has the advantage of reiterating over and over his/her choices, because, well, the "future-future" he/she can still send a signal to his/her past about want went wrong the previous time.
This happens to be a common plot for a lot of various time-travel movies and TV shows like Dark, Umbrella Academy, etc.
P.S.: the "competition" is just for entrance to these premier Indian colleges. I guess, the same would hold true if you want to enter prestigious U.S. colleges like Stanford, Harvard, Yale, or any other Ivy League colleges. Of course, in India, the number of students applying is vastly different, which is what makes it super competitive.
Isn't this similar to what Amazon Marketplace does? Of course, they do allow advertisers to promote their stuff, but apart from a top few sponsored content, rest all are ranked by reviews (or so they say).