This app sucks lmao

Can someone who knows physics ELI5 how the speed of light is always constant, even when the light source is moving? My (incorrect) intuition tells me that the speed should be equal to the speed of light + the speed of the light source.

Poop.

Wait. Is "howdy" a contraction of "how do you do"!?

Ok, now what?

I'll never post on here