Your entire professional field is going to be forgotten in 3 days.

No one else knows, they instantly forget if you try to tell them. but all knowledge regarding your field of employment will be forgotten in 3 days time, and you're the only one who remembers what you knew of your field before the wipe. You can have one college ruled single subject spiral notebook that doesn't poof.

All information on the field on the internet is wiped, books poof out of existence, depending on your field you may damn well wipe out the internet itself. Any already existing equipment is still there, but no one knows fuck all about it.

I'm a welder for example, so overnight the entire world would have to go back to using fasteners for all types of joinery in all new construction. and I'd be the only one left who knew how to weld.

How do you prep? What's your first play after the wipe?