We cannot really provide the best solution for our investment; however, it is enough to earn a profit and say " Yes my investment really is successful" and refer to other people.
I think not all of us make a better decision especially when we talk about money matters. The pressure "risk" and the financial concerns, as well as the existing problem, may alter the decisions that we have. Thus, we can`t forecast success on investment by merely having profit because it might end up to another bunch of investors to be trapped in an investment and eventually want a scapegoat even if the outcome would be a loss. Significantly, it will give discouragement to the other potential investors.
Thus, we should not be more confident about what we get because some people may not find the fit and would result in a greater impact of discouragement as a whole. In addition, even when the intention is good, but if the person lack of courage, patience, and aspiration then it would create a mistake; and a mistake of one individual may lead to an overall conclusive distraction.
This is one of the reason that in investing, we should always consider the probability of loss. Most of the time we only looked at the gains. This means that we might not have the same fate as the others. But we will never know unless we try.