Stuff that has been around for x years, can be expected to be around for another x years.

That is what the Lindy effect tells us.

Read about Lindy in Nassim Taleb’s Skin in the Game.

This informs how we should approach legacy technology: 

• Maintain it motherly, or
• Decommission it aggressively

The Lindy effect also informs us how to approach the adoption of new technology: with care.