I May Be A Jewish Scientist, But

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.

String Theory Is The Most Developed Theory With The Capacity To Unite General Relativity And Quantum Mechanics In A Consistent Manner. I Do Believe The Universe Is Consistent, And Therefore I Do Believe That General Relativity And Quantum Mechanics Should Be Put Together In A Manner That Makes Sense.

When You Buy A Jacket, You Pick The Size To Ensure It Fits. Similarly, We Live In A Universe In Which The Amount Of Dark Energy Fits Our Biological Make-up. If The Amount Of Dark Energy Were Substantially Different From What We've Measured, The Environmental Conditions Would Be Inhospitable To Our Form Of Life.

Black Holes Provide Theoreticians With An Important Theoretical Laboratory To Test Ideas. Conditions Within A Black Hole Are So Extreme, That By Analyzing Aspects Of Black Holes We See Space And Time In An Exotic Environment, One That Has Shed Important, And Sometimes Perplexing, New Light On Their Fundamental Nature.

There Are Many Of Us Thinking Of One Version Of Parallel Universe Theory Or Another. If It's All A Lot Of Nonsense, Then It's A Lot Of Wasted Effort Going Into This Far-out Idea. But If This Idea Is Correct, It Is A Fantastic Upheaval In Our Understanding.