alieniasty/What Expression really is compared to Func.txt

## What Expression really is compared to Func.txt
An expression simply turns a delegate into a data about itself. So a => a + 1 becomes something like "On the left side there's an int a. On the right side you add 1 to it."
That's it. You can go home now. Expression allows you to look inside the delegate and see everything it's wanting to do, empowering you to translate it into whatever you want, like a SQL query.
Func for example won't work for DbContext above because DbContext itself is blind to what is actually in the lambda expression and will not turn it into SQL, so it will do the next best thing and will iterate that conditional through each row in the table.
	An expression simply turns a delegate into a data about itself. So a => a + 1 becomes something like "On the left side there's an int a. On the right side you add 1 to it."
	That's it. You can go home now. Expression allows you to look inside the delegate and see everything it's wanting to do, empowering you to translate it into whatever you want, like a SQL query.
	Func for example won't work for DbContext above because DbContext itself is blind to what is actually in the lambda expression and will not turn it into SQL, so it will do the next best thing and will iterate that conditional through each row in the table.