Unnecessary risk

In many situation, we define that "challenge" = "risk"; and we are driving by " high risk, high return."

But without a clear picture of "risk",  we might start with a hope of success/win/gain while at that point it is already clear  of the result- fail.

In this case, balancing, calculating and measuring at the beginning is very important. We need to be able to detect it is really a high risk challenge or unnecessary risk that we shall avoid.

If we do already see one important fact that will lead you to fail by taking that challenge, and for which you have no solution; then at least to me, I will not define it as a challenge but an absolutely unnecessary risk, which we shall avoid for the life and business.