@gsignoret
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Hi! Great question, mkazma! I’m pretty sure that by “aggregate” demand and supply curves you were referring to the macro curves AD and AS. I’m also pretty sure that googs1484 thought you meant industry demand and supply.
Industry demand and supply curves are a micro concept and do involve adding up, as googs1484 kindly explains.
AD and AS are very different creatures and involve no adding up.
To understand the difference, you need to learn the IS-LM model. Once you’ve understood the concepts of goods market and money market equilibria in that model, you’ll be able to perfectly understand the answer to how AD and AS differ from demand and supply in the micro (individual consumer and firm or industry-level) supply and demand curves sense found here:
http://faculty.washington.edu/danby/notes/notes14.html
Good luck!I do find the videos useful. They communicate the essential points. I like the cartoons. The speakers are clear and come off as approachable, but their gender and ethnic mix reinforces my sense that if you’re African American or female, the CFA community is a lonely place. Also, I surmise that if anyone has unconscious biases toward white and (for quant work) Asian males for expertise over other ethnicities and women, your videos reinforce these biases. I would give the soft subjects to the Asians, use 50% women and use African Americans for quantitative material. Use your leverage as video producers to both teach and subtly change the world.
