[simianwords]

I thought about what you said and I think you are correct. But since we don't live in an ideal rational world do you agree that without advertisements the market can fail? How would new products even enter the limelight?

[RugnirViking]

Without advertisements? Word of mouth, neutral databases of information (these are hard to create in practice without at least some gaming, but i think things like the yellow pages or government operated lists of services get close)

[jayd16]

I'm not anti-marketing but it does point to a clear example of how consumer protection laws are needed for efficient markets.