What is the importance of having a selection bias?

Data Science, AI and ML
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What is the importance of having a selection bias?

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Ideally, you should randomly select every participant in a survey. But, sometimes biases creep in, whether intentional or unintentional. Selection bias takes away from the “randomness” you are hoping to achieve. It’s usually a result of not using the correct procedures to choose your participants. Types of selection bias include: the healthy worker effect, non-response bias, undercoverage, and voluntary response bias.
ref:https://www.statisticshowto.com/what-is-bias/#SelectionB