Is it better to have too many false negatives or too many false positives?

Is it better to have too many false negatives or too many false positives?

This blog explains the effect of false negative and false positives on the overall result
ref:https://medium.com/starts-with-a-bang/this-is-how-false-positives-and-false-negatives-can-bias-covid-19-testing-c89094495cfc