Omitted-Variables Bias

This is on BIG QUESTION 2 (Is there Omitted-Variables Bias?).
This is the 2nd of 7 BIG QUESTIONS for evaluating whether a regression model is producing an unbiased estimate of the true causal effect of some factor on an outcome.

[@antonioathias]

Did not expect to see Charles Barkley catching a stray while reviewing for my stats final Lmfao