"Backdating and pre-dating are first-class capabilities, not repair mechanisms."
The Axis Bends Both Ways
Because there's no container above the date, the date can be anything. You can file a crumb to today, to a day three weeks behind, or to a day next month — and none of these is a workaround. This is the practical payoff of the open timeline, and it splits into two distinct, first-class acts.
Past scatter is retrospective capture. A memory surfaces today that belongs to last Tuesday — the light in a room, a thing someone said, a feeling you didn't have words for at the time. You file it to last Tuesday. You are not correcting a mistake or backfilling a missed day; you are placing a real fragment on the day it belongs to, now that you finally have it.
Future scatter is intent capture. A note to a future self. An event you're anticipating. A question you want to ask yourself when a certain date arrives. You file it forward. It's not a reminder and not a todo — it's a thought planted on the day it's about, waiting there for when that day becomes today.
Filing Is Not Faking
Here's the subtlety that makes scatter honest: filing a crumb to another date never pretends it was written then. The day you assign it (its target_date) and the moment you actually wrote it (its captured_at) stay separate and both true. A memory filed to last Tuesday still records that you captured it today. A note placed on a date next month still records that you wrote it now. The timeline bends; the truth of when you wrote doesn't. That two-truth rule is important enough to get its own track next — but you can already feel why the open timeline needs it. Without it, every backdated crumb would be a small lie about the past.