Once unleashed the robots will toil for centuries mining and transporting minerals without human intervention. Robot miners never sleep, they never rest. When they falter they are cannibalized by others for scrap iron and spare parts. The final stage is when the robot miners start fabricating bigger and better robot miners by smelting the ore that they extract. Then they can go on indefinitely, infinitely into the long future.

At Twitter, we’ve been experimenting with feature testing. There are at least seven teams doing some form of feature testing of their services. Some of these teams have even discarded most of their single class tests, resulting in a test suite that’s 95% feature tests. It may be hard to believe, but throwing away single class tests can actually make development teams faster.