The essence of trading cryptocurrencies is playing probabilities.

If the target mathematical expectation you calculated at the beginning is to invest 10 dollars and earn 13 dollars.

How can you get infinitely close to 13?

According to the law of large numbers, as the number of repetitions approaches infinity, the arithmetic mean of the values almost certainly converges to the expected value.

If you bet on a single cryptocurrency to rise or fall to achieve your probability of earning 13 dollars, it is not very large and is unstable.

But if you select a basket of assets, for example, choosing 10, 20, or 50 cryptocurrencies of the same type or similar ideas, and keep the total investment amount at 10 dollars.

Then your final return will almost certainly converge to the mathematical expectation of 13 dollars you calculated initially.

So when shorting, try not to short just one,

when going long, try not to go long on just one,

as long as the amount invested per asset is consistent with your initial idea,

your risk will be lower,

and your returns will be more certain.