Hilchos Yom Tov

So in many places in the Torah, the Gema- the pasuk tells us lo sa'aseh melacha on the first day Pesach, on the last day Pesach.

Um, in Parshat Bo it brings down that you shouldn't do melacha and i- over there it does say, ach but asher yirach lekhol nefesh hu davar she'yasa lecha.

Meaning that there's a isur on Shabbes to do melacha.

We know there's a isur to do 39 melachot Shabbes.

There's a din on Shabbes that if a person does melacha b'meizid they get s'kilah.

On Yom Tov there's no s'kilah, there's m awt.

But the same lo sa'aseh melacha that exists on Shabbes exists on Yom Tov, except that there's an exception, ach asher yirach therefore ochel nefesh it's mutar.

Now the question is, if this is-- if it's that simple, so the chiyuv, the certain things we know for sure are asah.

For example, a person's not allowed to drive a car on Yom Tov, right? We know that.

A person's not allowed to turn on a light on Sha- on Yom Tov.

Why not? Isn't that ochel nefesh? I, I, I come home, it's very, very dark in my house.

I wanna be able to, to see.

I need to eat a seudah.

Why can't I just flip on the light? Yes, there's a isur melacha, but the Torah says, ach asher yirach lekhol nefesh.

It should be ochel nefesh.

It should be mutar, right? So we have to figure out what this means on a simple level.

When the Torah says it's asah, what's asah? And when Torah says it's mutar, what's mutar? And how, what we're raised with that certain things are clearly asah, how do we define what's mutar and what's asah? So we'll start with the Gemara in Bava on Daf Yod Beis Amud Alef.