Re: “If e-cigarettes aren’t harmful, then prove it” (Viewpoint, 5-13).

I find it surprising that a person of Dr. Anthony Chen’s education is so unclear on burden of proof. Of course, the burden of proof that a regulation is necessary is on the regulator.

There is evidently no data on the safety of vaping; otherwise he would have presented it. Without evidence, he is trying to protect us from an imaginary or, at best, potential danger.