That would certainly help to stop the spread of Covid, but if everyone followed your advice, we would very quickly find ourselves with an entirely new set of problems.
You can't optimize only to stop viral spread. You have to strike some balance between maintaining normalcy and reducing the risk of spread.
Covid has killed a million, and will surely kill many more, but global poverty is going to increase this year for the first time in decades, and tens of millions are going go hungry.
> That would certainly help to stop the spread of Covid, but if everyone followed your advice, we would very quickly find ourselves with an entirely new set of problems.
The advice of not going to a store if you're sick with something that resembles Covid? Is that such a large number of people it will have a big cost?
The tricky part there is "resembles Covid". The symptoms are so variable from person to person (I've heard it likened to the flu, a bad cold, a mild cold, a sinus infection - all this from different people that tested positive) that nailing those down with any certainty enough to make hard decisions like that on, is basically impossible.
From what people who experienced it told me, it's not the smell & taste loss which come from colds and similar illnesses, where your nose is runny or obstructed.
One person told me she was cleaning something with vinegar, her daughter entered the kitchen and told her "mum, this vinegar smell is horrible!" and then it dawned on her she couldn't smell anything.
No runny or stuffy nose. She was normal, except she couldn't smell anything.
At this point of the pandemic, complete loss of smell and taste of this kind almost certainly indicates covid19, outliers notwithstanding.
I can manage to buy myself a three-course dinner with wine and dessert (spending a pretty $$) without going into a shop. I've managed to buy hundreds of dollars worth of books from my local bookstores without going into shops. I can lie on my floor gasping for air and get power tools delivered to my porch!
Let's be clear about what we want. It sounds like you want people to spend money, not primarily that you want them to enter shops and breathe air and touch things.
You can't optimize only to stop viral spread. You have to strike some balance between maintaining normalcy and reducing the risk of spread.
Covid has killed a million, and will surely kill many more, but global poverty is going to increase this year for the first time in decades, and tens of millions are going go hungry.