"doubled" sounds ominous. twice tiny is still tiny. for instance, flying 100 times/year (100 times tiny risk) is hardly riskier than flying once (tiny risk). m

"doubled" sounds ominous. twice tiny is still tiny. for instance, flying 100 times/year (100 times tiny risk) is hardly riskier than flying once (tiny risk). most people don't even give that risk a second thought. many common events can double risks (or more).