Simulating Natural Selection

If you're about to leave a comment saying that faster creatures aren't actually less efficient, read this first. I presented that part a bit strangely. At 2:14, I say moving quickly is less efficient, giving the example of a creature moving a unit distance in half the time, using twice the energy. Then, at 4:53, I show a formula for the energy cost per unit time, which depends on the square of the creature's speed. I gave distance per time, energy per time, and distance per energy at separate parts of the video, and that was confusing. So here's a more explicit summary. If we double a creature's speed... - its distance per time is doubled (the definition of speed) - its energy per time is quadrupled (because it depends on the square of speed) - its distance per energy is halved: (2x distance per time) / (4x energy per unit time) That last bullet is the "efficiency" from the video. With its starting energy for a day, a 2x-speed creature can only travel half the distance.

Man cut the food to a tenth, started a mass famine and said ‘Hm’ when they all died lmao

I'd like to thank my larger human friends for not eating me.

"We're living in a simulation!" - The Blobs probably

In all seriousness, this should be shown in classrooms. It really does explain topics very very well providing a visual and being able to see it really helps rather than just reading it.

Well I'm just going to click that little red rectangular button and hope it shows me more like this.

we now know the secret to immortality: just eat food every day

I'm a biologist and researcher in cell biology. I just discovered this channel and I have to say it is possibly the best way out there to quickly learn and understand how evolution works. Amazing modeling. Thanks!

me: hated school, dropped out of college, can’t stand learning also me: math man play god, must pull all nighter

awesome!

I bet those blobs are like -dude, what's the meaning of life -I think we live in a simulation -what a stupid theory

“Which you might notice is similar to the formula for kinetic energy.” Funnily enough that wasn’t my first thought!

This feels like a video God would watch when preparing for his Big Bang final.

TFW youtube recommends something interesting for a change

Can we have a moment of silence for the blobs that never made it back home?

This is an incredible video and a very well presented experiment, thank you for putting the time in to create this!

Your videos are amazing and I watch them in my free time! Your simulations are amazing because you integrate them so well into what you are talking about and I really admire that.

I'm glad the YouTube algorithm is evolving and finally recommended me something good.

"The other day I came across somebody that more than 20% larger than me. It's a good thing I had better sense and better speed. That was scary. I guess I'm truly living on the edge!" - Blob

This is easily my favorite Primer video, I came back often to see it again haha I love this experimentation, I would love to do some runs by myself on different environments, it looks so much fun!