[brownsfan019]

That is the million dollar question. With the answer to this question, you could become a multi, multi-millionaire rather quickly. Since this is not realistic, I think it goes to show that no one knows the answer to this (and probably never will).

Some argue based on indicators, price action, etc. and I personally believe there is no answer. You don't know you are in a trend till 4:15pm EST. Until then, it's anyone's guess!