Only the early morning sale is a price discrimination scheme. Meals cost more in cities because firm costs are higher. It costs more to insure a large car because the company's liability is higher, and the egg sale is available to everyone.

Any person wishing to act against the recommendations of the firm should first be informed of the firm's recommendations prior to the firm trading for them

Irving Fisher's idea was that interest rates equal real interest rate plus expected inflation.
That means an upward sloping yield curve would imply that the market expects inflation to rise.

Arbitrageurs buy from a seller in one market while simultaneously selling to a buyer in another market. Dealers, however, connect buyers to sellers who are present at the same place but at different times.

Economic profit is total revenue minus the sum of explicit and implicit costs. Thus, when economic profit is zero, firms still receive a profit to cover their implicit costs.