Where Time Lives

Time exists in exactly one place in the Taleem system.

Time lives only in the player.

Time Is Not Content

Time is not part of a lesson.

A lesson describes what is shown, not when it is shown.

Treating time as content makes lessons fragile and impossible to reuse.

The Only Time-Aware Layer

The time-based engine (taleem-player) is the only layer allowed to reason in seconds.

It may:

• schedule slide visibility
• advance slides automatically
• control progressive reveal

Where Time Must Not Exist

Time must not appear in:

• schema definitions
• renderers
• browser engines
• UI components

If time appears in any of these places, the boundary has been violated.

Why This Rule Is Strict

When time leaks into other layers:

• content becomes tied to a single playback mode
• reuse becomes impossible
• systems become tightly coupled

By isolating time, Taleem keeps lessons flexible without modifying the content itself.

The Consequence

A single deck can be:

• browsed manually
• played automatically
• synchronized with audio
• revealed progressively

All without rewriting the lesson.

The Rule

If a feature needs time, it belongs in the player.

If it does not, it does not.