Energy Is The Ultimate Convertable Currency.

I Can Assure You That No String Theorist Would Be Interested In Working On String Theory If It Were Somehow Permanently Beyond Testability. That Would No Longer Be Doing Science.

Physics Grapples With The Largest Questions The Universe Presents. Where Did The Totality Of Reality Come From? Did Time Have A Beginning?

General Relativity Is In The Old Newtonian Framework Where You Predict What Will Happen, Not The Probability Of What Will Happen. And Putting Together The Probabilities Of Quantum Mechanics With The Certainty Of General Relativity, That's Been The Big Challenge And That's Why We Have Been Excited About String Theory, As It's One Of The Only Approaches That Can Put It Together.

Sometimes Nature Guards Her Secrets With The Unbreakable Grip Of Physical Law. Sometimes The True Nature Of Reality Beckons From Just Beyond The Horizon.

The Central Idea Of String Theory Is Quite Straightforward. If You Examine Any Piece Of Matter Ever More Finely, At First You'll Find Molecules, Atoms, Sub-atomic Particles. Probe The Smaller Particles, You'll Find Something Else, A Tiny Vibrating Filament Of Energy, A Little Tiny Vibrating String.