A live map of reasons and replies

Is a beginningless model of spacetime true?

Trace the strongest lines of support, challenge each claim, and follow every response as far as the reasoning goes.

01 Reasons
supporting
02 Reasons
challenging

Before you begin

Orient yourself to the question

01 Clarifying the question

On some models, spacetime has no beginning. This is usually either because it extends infinitely into the past or because time deconstructed in some sense. Is one of these models which lack a beginning true?

The argument field

Follow a claim. Test its reply.

Open any reason to read its case. Linked claims take you deeper into the tree.

3 arguments at this level

For

Supports this claim

1 reason
  1. Physical reality began to exist

    01 Supporting reason Physical reality began to exist Read argument · 8 paths deeper

Against

Challenges this claim

2 reasons
  1. Is the Aguirre-Gratton reversed arrow-of-time model true?

    01 Challenging reason Is the Aguirre-Gratton reversed arrow-of-time model true? Read argument · 1 path deeper

    The Aguirre-Gratton reversed arrow-of-time model is true. This is relevant because the model lacks a beginning.


  2. Is the Carroll-Chen reversed arrow-of-time to AsDs model true?

    02 Challenging reason Is the Carroll-Chen reversed arrow-of-time to AsDs model true? Read argument · 1 path deeper

    The Carroll-Chen reversed arrow-of-time model is true. [See full article.] This is relevant because the model lacks a beginning.