Ideas in this flowchart

• Time Travel Possibility
• Stephen Hawking's View
• Time travel is possible but not practical
• Expectations on Time Machine Invention
• Albert Einstein's Realization
• Einstein's equations allow backward time travel
• Universe Rotation Theory
• Rotating universe allows time travel
• Universe expands, not rotates
• Implication of Universe Rotation
• Time travel would become commonplace
• Thank goodness universe expands