The Big-bang starting with a created unique string

Let's examine a simple model of a multiverse generated by the first and only big bang:

now, some universes have already merged within our event horizon,

others are still external, and some are interacting in the peripheral regions of ours.

Could you summarize the scenario and the implications pro and versus this initial simplification?

Could any element discord with our current knowledge?

The reply by Gemini-Bard 1.5:

Scenario:

Origin: A single Big Bang event initiates the creation of a vast number of universes.
Dynamics:

Merged Universes: Some universes have collided and merged with our own, leaving imprints or anomalies in our observable universe.
External Universes: Many universes remain entirely separate and beyond our observable horizon.
Interacting Universes: Some universes exist near the periphery of our own, exerting subtle gravitational or other influences.

Implications:

Pro:

Explains Anomalies: Could potentially explain unexplained phenomena in our universe, such as:

Dark Matter/Energy: Gravitational influence from external universes.
Cosmic Microwave Background Anomalies: Residual effects of past collisions.
Fine-tuning of Physical Constants: Variations in physical laws across merging universes could influence our own.

Versus:

Lack of Evidence: No direct observational evidence for merged or interacting universes currently exists.
Theoretical Challenges:

Defining "collision" between universes is complex.
Mechanisms for interaction between universes are largely unknown.

Simplicity: This model oversimplifies the potential complexity of a multiverse, which may involve different origins, dimensions, and physical laws.

Discord with Current Knowledge:

No Direct Evidence: As mentioned, this model lacks direct observational support.
Challenges to Standard Cosmology: The idea of universe collisions could potentially contradict aspects of our current understanding of cosmology, such as the smoothness and homogeneity of the early universe.

Important Notes:

Speculative: This is a highly speculative scenario.
Multiverse Theory is Diverse: This is just one possible model of a multiverse. Many other models exist, with varying degrees of complexity and testability.

In Summary:

This simplified model of a multiverse offers intriguing possibilities for explaining certain cosmological phenomena. However, it faces significant challenges in terms of observational evidence and theoretical consistency. Further research and development of theoretical frameworks are necessary to explore these ideas further.