That is possibly true if one is overtrading or perhaps trading the 1 min chart. However, trading a chart only as big as the 5 min chart allows ample opportunity to post real time calls. ---(One minute can be done as well, it's just a little more challenging to send postings.)Realistically it is hard for people with discretionary systems to make many real time calls, because of so much of uncertainty or contexts surrounding the potential entry signals; on the other hand, for the few that can handle real time calls consistently and without any hesitation, you can bet their systems are based on solid mathematical and quantifiable parameters. But you won't see those people posting frequently on ET. They don't bother, they don't need to convince anyone, why would they?