Answer2: It is true that David99a's slippery slope argument is unconvincing. Slippery slope arguments are often used to make claims that are not supported by evidence or logic. This type of argument is often used to draw conclusions that are not necessarily true. In this case, David99a's argument is unconvincing because it fails to provide any evidence or logical reasoning to support its claims. As such, it is not a valid argument and should not be taken seriously.