Yes making precise projections is very difficult, but technical indicators can still be used for getting a fair enough idea. Even if the accuracy of the indicator or software you use is 70 %, it should be considered effective.
%% OK; + that is really is not a problem. For example there are more than a few types of 200 day moving averages, but no problem\we dont want everybody selling @ same time anyway.............................................................................................
Entry using range Bars, 50sma, R2Trend (Rsquared), ERTrend (efficiency ratio) Trend trading is 10 small losses (treading water) with 1 big win (moving avg two line for exit)
That depends on who "We" is. If I'm an institution looking to open a position possibly I'd like some catalyst that would cause everyone to sell. There is always 2 sides to a trade.