Hello and welcome to a weekend episode of Daily English — where we try to grow, in English and in life.

Last time, we talked about Black Swan events — rare, unpredictable events that can change everything.

So today, a natural question follows: If we cannot predict everything, how should we make decisions?

There is a concept used in science and public policy called the precautionary principle.

And it means something quite simple: When an action could cause serious harm,
 we should take it seriously — even if we don’t have complete certainty.

In other words, We don’t always need full proof before we act with caution.

This idea is often used in areas like: Public health. Environmental protection. New technologies.

For example, If a substance might harm human health, waiting for absolute certainty could mean reacting too late. So instead, precautions are taken early.

The precautionary principle is not about fear. It’s about responsibility under uncertainty.

Because once damage happens, it is often difficult — or impossible — to reverse.

This connects directly to what we discussed before. If some events are unpredictable, then waiting for perfect information can leave us unprepared.

But this idea also requires balance. Not every small risk should stop progress.

So the real question becomes: Which risks are serious enough
 to deserve early caution?

So this week, you might reflect on something simple.

Where in your life are you waiting for certainty before taking something seriously?

And where might a small precaution make a meaningful difference?

Let me leave you with this: Uncertainty is part of life. But thoughtful action means we don’t ignore risk just because it is not fully proven.

Thank you for being here today.
 See you tomorrow.