I have no idea why these 'semantics' debates continually show up in discussion forums.
You can predict a coin toss. Your accuracy rate may be 50% +/-.
You can forecast a coin toss too.
You can predict/forecast the weather too. Accurately or not.
You can predict/forecast anything. It's up to you. What really matters. What should, imo, really be debated is how accurate are the predictions/forecasts. Not whether we should call them this name or that name.
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That said, I can enter a trade and believe/say to the effect of, if not in these exact words:
"I'll set my stops, both loss and target; and see how it goes." Or,
"The trend has been up, let's see if it continues."
The above are not predictions. The trader either doesn't have a guess/prediction/forecast...or doesn't care (a straddle, for example).
Or I can guess/predict/forecast:
"I expect/forecast/predict/guess that the trend will continue/reverse." Or,
"I expect/forecast/predict/guess that the price will rise/fall."
Imo, very few enter a trade without some sort of expectation that it'll eventually go in the direction that brings them profit. Even with a straddle, the expectation/forecast/prediction/guess is that the instrument will move, rather than stay flat.