Jay Foreman

The trouble was, nobody at the time knew exactly where or what shape the Lake of the Woods was.

And so when they went to actually survey the land with this treaty in their hand, they had no option but to draw this line in an absurd straight line down, cutting off part of the US

when it should actually, by all reasonable logic, it should be in Canada.

But to this day, it's a part of the U.S.

that you can only access either by boat or by traveling through two countries.

But on the other hand, we're losing a vital skill.

There were some studies done that showed that the rise of GPS is likely contributing to an epidemic in Alzheimer's, and that's because using a good old-fashioned paper map... In fact, it doesn't even have to be a paper map.

Using a map, it can even be on your smartphone, but where the map doesn't revolve around you, where you have to look at it and work out where you are.

That skill is something that is very good for the hippocampus.

There was a study done, and they worked out that of...

400 different occupations.

The occupation that had by far the biggest hippocampus was taxi drivers because of the regular exercise they were doing in memorizing the streets and knowing their way around London without having to depend on GPS.

So it's something that we're missing out on.

There's another study we found out about.

UCL did another study in 2014

where they got a bunch of students to walk around Soho, this neighborhood in central London.

Half of them were using their satnavs, they were using GPS on their phone, and half of them were using paper maps.

And they were all walking around wearing this special equipment on their head that monitored how much their hippocampus was being used.

And it turns out that those that were using maps the old-fashioned way, their hippocampuses were being used rather a lot, and it was firing away during this experiment.

And those that were just staring down at the blinking blue dots on their phone, it was barely being used at all.