Although sunk costs do not participate in decision-making, if a coin rises, we should still consider why we didn't buy it when its price was low.

1. The information is insufficient, and I didn't learn about it in the early stages.
2. Lack of understanding, I didn't understand it before.
3. After analyzing myself, I don't have a good outlook on this coin.

In the first two cases, one can give oneself two slaps; in the third case, we have been considering whether the fundamentals of this coin have changed positively, or if the rise is merely due to the emotional impact of a single piece of news.

The former can be tracked, while the latter more often signifies the "selling time" for the impending short-term liquidity.