Old Man Mike
Fast as Lightning!
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From a physics point of view, "Sunlight" (in real world situations) is not an automatic virus destroyer. At these ultra-micro levels (where the interactions take place) it's still a statistical game as to whether the UV wavelengths hit the viruses in the right bonds to inactivate their function (probably their bonding sites but maybe also several other vulnerable things like insertion mechanisms or nucleic acid interference or imposture in key biochemical arenas.)
Whatever's going on "down there" at the level of molecules (we are still modeling away in the dark) it's bound to be complicated, and viruses are almost surely able to rejoin certain broken bonds and still create havoc. So, being outside in the Sun: do the UV rays happen to hit every migrant virus hard enough in the right chemical bond areas to deactivate them? The point is that this isn't Magic nor is it the treatment that you could give exposed viruses on the lab bench.
Will being out a lot in the Sun kills some viruses? Sure. It won't kill them all in nano-seconds just when you and they have your little path crossings however --- this is a game of statistically REDUCING risks not canceling them. In that odd sense, an ENGINEERED inside environment has much better chances of stopping viral infections than an external uncontrolled one. Is an external uncontrolled one better than an internal uncontrolled one? Sure, due to the potential uncontrolled concentration. Is an uncontrolled external environment better than a "trying-to-be" controlled inside environment? Probably not. What are the chances in ANY environment of viable viral passage from one person to another? That estimate (differing environment to environment) is the only meaningful comparative issue. Sun isn't magic nor is it the only factor in passing something along.
Whatever's going on "down there" at the level of molecules (we are still modeling away in the dark) it's bound to be complicated, and viruses are almost surely able to rejoin certain broken bonds and still create havoc. So, being outside in the Sun: do the UV rays happen to hit every migrant virus hard enough in the right chemical bond areas to deactivate them? The point is that this isn't Magic nor is it the treatment that you could give exposed viruses on the lab bench.
Will being out a lot in the Sun kills some viruses? Sure. It won't kill them all in nano-seconds just when you and they have your little path crossings however --- this is a game of statistically REDUCING risks not canceling them. In that odd sense, an ENGINEERED inside environment has much better chances of stopping viral infections than an external uncontrolled one. Is an external uncontrolled one better than an internal uncontrolled one? Sure, due to the potential uncontrolled concentration. Is an uncontrolled external environment better than a "trying-to-be" controlled inside environment? Probably not. What are the chances in ANY environment of viable viral passage from one person to another? That estimate (differing environment to environment) is the only meaningful comparative issue. Sun isn't magic nor is it the only factor in passing something along.