Every six days, at exactly 11:46 am, a wise-looking monkey called Archibald comes to visit you. No matter where you are, Archibald just shows up. Bizarrely he speaks fluent English with an upper-class British accent.

You have no idea why a talking monkey comes to visit you but you have learned to accept it as your new normal. Mostly you chat about your week. Archibald will sometimes offer advice. When you follow Archibald’s advice, things have a way of working out spectacularly well for you.

Vary rarely Archibald will bring a gift. These gifts always end up being immeasurably useful within a few days. A few months ago, he gave you a hand-cranked torch (flashlight). The day after, there was a two-day power cut.

Archibald’s visit today was odd. Archibald arrived with a large canvass bag. He offered no advice at all and gave you a hug before he left. The bag contained water purification tablets, twelve lead-lined bottles of potassium iodide, emergency burn treatment packs, gas masks, and a pocket guide on giving first aid for radiation poisoning.