Ruby Newbie here,

I understand that everything is an object in Ruby, one thing that I wasn't sure about was understanding Variables. Variables basically give reference to objects (correct me if I'm wrong). During an instructional video, the teacher did a demonstration which went as below:

(irb)

a = 100
==> 100
b = a
==> 100
b
==> 100

This part I get, makes total sense.

Then he did

a = 50
==> 50
b
==> 100

If B is supposed to point to what a was set which was a 100, why does b still point to 100 if a has now been set as 50?