 Okay, this blows my brain apart because electricity, all it is truly electricity is nothing more than moving charged particles, that's it. So when there's electricity that runs through the wires to your light and then lights up your light, all that is is moving charged particles. And the particles that are moving through the wire in your light bulb are electrons. And we know electrons are negatively charged, and so if electrons are streaming along a wire, that's electricity. Now, there is a huge part of my brain that is like, they can't quite conceptualize what that is. I can totally give you that definition all day long. And I can totally visualize how if those charged particles are moving through a really, really thin wire where there's not much room, but there's a big pressure to push those charged particles through that really thin wire, I can totally visualize how that wire will glow. It'll release heat and light. And because those particles are creating friction or whatever, I can totally visualize that. But still, there's like this abstract quality to the concept of electricity that I think is difficult, especially when you start thinking, okay, a neuron is not going to light up. But if somehow we can set up a situation where charged particles will move along the axon and the dendrites down to the axon terminal or the synaptic knobs, if we could get charged particles to move somehow through this space, then we could create an electrical message. And guess what? That's all an action potential is. It's this wave of charged particles moving down the neuron parts. Somehow we have to set up a difference in charge from the inside of the neuron to the outside of the neuron. So somehow we have to say, okay, you know what? We're going to make the inside of the neuron super negative, negatively charged compared to the outside. We're going to make it positive. If, okay, so take a deep breath and imagine that if you could do that, if you could set up a difference in charge from the inside to the outside of a neuron, then you could actually make it so, let's say, a positively charged particle like, just for the heck of it, sodium, might want to move into the cell. That's a moving charged particle done. You just created electricity. Seriously? That's really the end game. If you can change, if you can create a difference in charge and then control the moment when charged particles can move, you can create electricity. And then if you can make it like, move like a wave down the axon, boom, you just created an action potential. So how do we do that? How do we set up a more negative inside and a more positive outside of our neuron and that, hopefully already you're like, oh, I think I can visualize how I might be able to do that because we actually saw a pump, a transporter, an active transporter in lecture number, I think it was three, that gives you a huge hint. So you go look that up and I'll come back and we'll talk about it.