A computer accessory salesman attempts to convince you to purchase a "solar neutrino" shield for your new computer. (It's even "on sale"!) Why do you turn down this excellent offer?

Because neutrinos rarely, if ever, interact with my computer.

Explanation:

A computer accessory salesman attempts to convince me to purchase a "solar neutrino" shield for my new computer. (It's even "on-sale"!) I turn down this excellent offer because neutrinos rarely, if ever, interact with my computer. Lack of any links to stuff, neutrinos remain extraordinarily unfriendly. They simply don't desire to communicate with anything in today's material world. To neutrinos, the Sun is translucent, and huge numbers of them walk away into all ways of space at approximately the pace concerning light.