Interesting low-cost measure to not use a front-derailleur

The S2 model aimed to give riders an uphill climbing gear but without introducing the complexities of a gear-shifting derailleur, tensioned cables, and handlebar shifters. Engineers at SRAM came up with a solution that’s hard to imagine for other bikes but not too hard to grasp. A freewheel in the back has two cogs, with a high gear for cruising and a low gear for climbing. If you pedal backward a half-rotation, the outer, higher gear engages or disengages, taking over the work from the lower gear. The cogs, chains, and chainrings on this bike are always moving, but only one gear is ever doing the work.

Probably not of much use but I thought it was cool

Certainly not limited to IT. One of my professors from many years was an aerospace engineer¹. He recounts to us the time that he busted his ass on some design for a long time and managed to make some huge cost savings. And then after it was done he realized that all he really did with his extra hard work was help some executives and stockholders get a bit richer. Not long after that he switched to education.

¹Not in the defense industry

Great read. Even in STEM research as a grad student I’m very tired of every saying “let’s try machine learning on this problem” to get something that works marginally better than some conventional models but requiring huge amounts of computation and data.