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2021
430

War Starts

22nd May 1990. The two Yemens, north and south, become one. The mood of the world seems to be for the dissolution of old animosities. In that same week, East and West Germany sign a treaty to begin reunification, the US and USSR agree to destroy their chemical weapons, and the World Health Organisation stops…

436

Re-thinking electronic mail

There are many problems with the existing Internet email system, such as spam, scam, surveillance, insecurity, centralization, and complexity. The problems are starting to outweigh the benefits of the system. Fixing the problems by evolving the current system seems overwhelmingly difficult. This essay examines some…

439

Kubernetes at Home with K3s

It’s been a while on the blog! I promise there will be more regular updates from now on, but maybe not always about tech… But why I know what you’re thinking - Kubernetes? On a home server? Who’d be that crazy? Well, a while ago I’d agree but a few things have changed my mind recently…

445

All Horses Are the Same Color

Problem: Show that all horses are of the same color. “Solution”: We will show, by induction, that for any set of $ n$ horses, every horse in that set has the same color. Suppose $ n=1$, this is obviously true. Now suppose for all sets of $ n$ horses, every horse in the set has the same color. Consider any set $ H$ of…