"If nicotine is harmful, it is a minuscule risk compared to cigarette smoking," he said.
Richard Taylor of the CAA acknowledges that they "represent a much-reduced safety risk compared with mobiles".
Where would you rank that risk compared to potential conflict in the South China Sea, Taiwan, or trade disputes?
One distinct risk is a stroke, but the surgeons expressed hope that the design of the AbioCor would reduce that risk, compared with the Jarvik-7.
In this year's races, 10 of the 19 Republican seats being contested are at various degrees of risk, compared with only 5 of the 14 Democratic seats.
An asset's risk premium is a form of compensation for investors who tolerate the extra risk, compared with that of a risk-free asset, in a given investment.
Of course Australia is at no direct risk compared to Japan, so Tokyo takes on no liability in exchange for its marginal benefit.
And during the recent market decline, these companies "weren't viewed as such a regulatory and corporate governance risk compared with banks and brokers," he added.
"There is still a lot of disposable income; the risk compared to the US if you are caught is felt to be much less," he said.
Consequently, the spreads, or the difference between what investors demand of Russian bonds for the additional risk compared with United States Treasuries, have been narrowing quickly this year.
All of these factors have reduced investor risk compared to a few years ago.
