Quote from gkishot:
I think 3x means profit factor as defined on collective2, not risk/reward ratio as you defined it. Then it makes sense.
No, this has nothing to do with Collective2. A profit factor is a well known metric, it is simply the historical net profits of a trading system divided by the historical net losses of the losers.
On the other hand, the risk/reward ratio is obtained by dividing the number of units you want to earn by the number of units you are willing to lose, for each trade.
You can calculate that ratio every time you initiate a trade, assuming you know your stop and your target in advance. The problem is that traders believe that by simply setting this ratio to 3 (risk 1 unit to make 3), they will automatically make money in the long run, regardless of their trading strategy, which is total nonsense of course.