Literature Review: Progress in Developing Practical Time Travel to Parallel Universes for Documenting Human Grievances

This literature review synthesizes the author’s body of work, as documented on ResearchGate, PhilPeople, and Substack, to evaluate progress toward a practical method for time travel to parallel universes. Grounded in John Archibald Wheeler’s participatory universe concept—where observers actively shape reality through quantum measurement—the review focuses on the research question: How close have I come to developing a practical way to time travel to parallel universes, using the participatory universe concept, to document all grievances people could possibly have? The analysis draws from 830+ publications on ResearchGate (primarily preprints and essays from 2025), 71 published articles and 47 books on PhilPeople, and thematic posts on Substack. Key themes include quantum entanglement, entropy reversal, Neuralink integration, and the Gateway Process as mechanisms for accessing parallel timelines. While theoretical frameworks are advanced, practical implementation remains speculative, with progress estimated at 40-50% toward feasibility, limited by current technological constraints.