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When it comes to the COVID-19 modeling, it can all be a little bit confusing out there.

You have likely heard the phrase flattened the curve used when talking about reducing the number of coronavirus cases.

The horizontal line is the key one, that is whether health systems have the capacity to cope with the numbers of infections.

The COVID-19 pandemic has dominated every part of life since the beginning of the year.

Some countries have done better than others at holding back the disease,

but everyone has used the same tool to guide their response.

Mathematics.

I'm Alok Jarl, a science correspondent here at the Economist.

Math and I go a long way back, a very long time ago I was a physicist.

Mathematics was the language of the worlds that I used to explore.

Today's episode of Babbage from Economist Radio looks at how mathematics can be used to tackle some of life's most pressing problems

from predicting pandemics and guiding health policy to spotting bias in politics.

I'll also speak to physicist Graham Farmlow about the way mathematics reveals the true nature of the very building blocks of the universe.

If you're the sort of person who has very broad interests, I think mathematics is something for you.

I think that's often forgotten, like people think of mathematics as a very narrow subject.

That's David Sumpter, a professor of applied mathematics at Upsile University in Sweden.

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