Hannah Fry

And watching the program back, knowing what went on to happen, we are way too gleeful.

We are way too gleeful about the fact that this virus is spreading.

It was sort of, maybe not a joke, but it was like everyone thought it was very fun and very funny.

And we have all of these amazing simulations and I'll send these across.

All right, so what you're looking at here, if you were only looking at it, what you're looking at here is this red dot is me and it's my location.

And it's what I'm doing as I'm wandering around in Hazelmere that day.

Now, unbeknownst to me, I walked past somebody who also was running the app.

And so I essentially spread the virus onto them.

I was patient zero, yeah.

Although that's quite a controversial phrase, by the way, the idea of calling someone patient zero, because it sort of, it almost implies that there's some kind of blame that can be laid at that individual's door.

No, we just call it the BBC pandemic.

Okay, so we have all these visualisations of exactly what happened about how this virus ended up spreading.

What was really interesting was that people who were service workers, so people who were, there's somebody who worked in a pharmacy, for instance, who ended up being a super spreader in our virus, right?

Exactly as you would see going on to be mirrored later on in the real thing.

And we got this incredibly rich detail of, you know, people from Hazelmere saying,

Not knowing each other, not realizing they're on the same train platform in London, many, many miles away, and then passing the virus on from one to another.

Just this really, really rich simulation.

We also then did some calculations and then based on our model, we calculated if there were no restrictions, if you didn't close any schools, if you didn't do anything at all.

If a pandemic were to hit the UK, around 886,000 people could potentially lose their lives.

So it sort of had this very big ending to it.