When variance is your main source of profit

Quote: 100xOdds

Read that while randomly surfing gambling stuff but can't find it again.

Can someone explain that phrase to me?
And give me an example?
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Quote:

The phrase "WHEN VARIANCE IS YOUR MAIN SOURCE OF PROFIT" suggests a situation where an individual or entity is relying on unpredictability or fluctuations in a particular variable (in this case, "variance") to generate their primary source of income or profit. In finance and investing, for example, some traders or investors might try to profit from volatility or variance in the prices of stocks, currencies, or other assets.

This approach can be risky because it relies on market fluctuations and uncertainty, and profits can be unpredictable. In some cases, traders may embrace risk and use strategies like options trading or speculative investments where they hope to benefit from price swings or variances in the underlying assets.

However, it's essential to note that relying solely on variance for profit can also lead to significant losses, as unpredictable fluctuations can go against the trader's expectations. So, this phrase often implies a high level of risk associated with the profit-making strategy.