Okay kiddo, have you heard of derivatives? It's like when you want to know how much something changes when you change something else just a little bit.
Now imagine you have a shape, like a curve or a surface, and you want to know how much it's changing when you move just a little bit along it. That's where Kähler differential comes in.
It's like a special tool that helps you measure how things change on these shapes. But it's not just any regular measurements, it's like a special kind of measurement that can take into account both the shape and how it's embedded in space.
It's kind of like when you measure how the sun changes while it's moving across the sky. You can measure how far it moves, but you also have to take into account where you're standing on the Earth, what time of day it is, and lots of other things.
That's how Kähler differential works too. It's a way to measure how a shape changes while taking into account all sorts of other things that might affect it. Does that make sense?