Time element: Control the number of trades in DT

Time element in DT is very important. It can be used to control the number of trades in DT. It can be used in pre-open planning. Once it becomes the integrated part of the DT system, and the mind can follow/stick with it, angel will be able to beat the devil. Mental energy in DT is not unlimited, on the reverse side, it is very limited. We need a tool or a measurement to help us preserve the mental energy. Time based rules will help a lot in this case. To be specific on the rule, it is something like "only do one trade in every half hour".