What keeping an old interface costs

Worked examples, recomputed

Every number the mechanisms quote for this relationship is recomputed from it, so none of them disagrees with it.

• 400 integrations × 12 months → 4,800 integration-months

Where it appears

Each mechanism states it in its own names. The general symbol each name stands for is shown with it.

• Interfaces & Formats

  What can two parties agree on when they cannot talk to each other?

  $$\text{dual-running duration}\times \text{callers}$$

  Read it in place →