Why did Tesla argue that the sharp point of Franklin's rod was inherently flawed?

Answer

It concentrated electrical potential, causing the atmosphere around it to ionize more readily.

Tesla asserted that the sharp point concentrated electrical potential, which ionized the surrounding atmosphere, creating a conductive path that effectively invited the lightning strike.

Why did Tesla argue that the sharp point of Franklin's rod was inherently flawed?
inventioninventorTeslaelectricitylightning rod