chart, page-27

the same graph as you, the interpretation is different

there are really only two types, reversal (in this case) or trend following (not this case)

bouncing off a support is reversal. tehrefore its positive until it breaks support in which case it becomes negative. I dont predict where the price is giong, i just give a probability of likihood. The probability yesterday was positively skewed. Dont want to argue about technical analysis with you as there are so many schools of thoughts, interpretation is always different