Yes! I’m still a nerd! I found How To Catch A Lion hilarious:
The Bolzano-Weierstraﾟ method
Divide the desert by a line running from north to south. The lion is then either in the eastern or in the western part. Let’s assume it is in the eastern part. Divide this part by a line running from east to west. The lion is either in the northern or in the southern part. Let’s assume it is in the northern part. We can continue this process arbitrarily and thereby constructing with each step an increasingly narrow fence around the selected area. The diameter of the chosen partitions converges to zero so that the lion is caged into a fence of arbitrarily small diameter.
(Via Darby, who picked the Schrödinger’s Lion method.)