**Christopher J. Isham**, Imperial College London, London, England, UK

**ArXiv** (25): Spacetime and the Philosophical Challenge of Quantum Gravity, 1999**Books**: *Modern Differential Geometry for Physicists*, World Scientific, 1989, 1999, 2002**Homepage**(s): AIP, Faraday, Google Scholar, inSPIRE^{HEP}, PhilPapers, Wikipedia**Publications****YouTube**: *Why There is ‘Something’ Rather Than ‘Nothing’?*, March 2022;

Most recent email: 7 September 2022 at 2:06 PM

Dear professor emeritus Dr. Christopher J. Isham:

I just finished watching your video while working on this page, https://81018.com/isham/. I have seen your name among authors including long-departed friends like Ted Bastin and H. Pierre Noyes. In 2011, helping my nephew, the head of the math department at the family’s high school, we mapped the universe using base-2 notation. Great simple fun with math and geometries, it didn’t flow with current scholarship. Although we’ve all enjoyed Kees Boeke’s scale of the universe, ours started with the Planck base units and assumed they were the first moments of space-time. We also decided that an infinitesimal sphere manifested at that first notation. Then we started learning a little cosmology with James Peebles and others.

Still very much out in left field, I think there are merits within our simple model:

1. It appears to be the only ontology-cosmology that begins with the three facets of pi that bridge the finite and infinite: continuity-symmetry-and-harmony.

2. It appears to be the only ontology-cosmology that gives perfection its place within the earliest notations of this grid (called smooth) and then has a geometry for gaps, fluctuations, imperfections and creativity.

3. It appears to be the only ontology-cosmology that encapsulates the big bang theory with an all natural emergence and thrust.

The current homepage is always the latest overview: https://81018.com. Thank you.

Warmly,

Bruce

PS. There is a page for Fotini Markopoulou here. -BEC

First email: Tuesday, March 3, 2020 at 11:25 AM

Dear professor emeritus Dr. Christopher J. Isham:

Thank you for all your work with Jeremy Butterfield on Spacetime and the philosophical challenge of quantum gravity (1999). Although a rather heavy lift for us in our high school geometry class, we’ve been going off the normal tracks for several years now.

It all began when we went inside our desktop models of the tetrahedron and octahedron.

Following Zeno in 3D, we divided the edges of the tetrahedron by 2; and, in 45 steps we were down into the CERN-scale of particle physics and in 67 more steps going within we were in the Planck scale. We turned around, used the Planck Length for the size of our edge; and in 112 steps, we were back up in the classroom, and in another 90 doublings, we were out to the current day (13.81 billion years) and size of the universe. Just simple math.

From Planck Time and to this day and the approximate size of the universe took 202 doublings. At the one second mark, the Planck length is within .1% of the official 299,792.458 kilometers. When you divide the values for Planck Length by Planck Time, it is also within .1% of the laboratory measurement.

Initially we considered it a good STEM tool. Today we think there is quite a bit more to learn.

Would you encourage or discourage our activities? We know how idiosyncratic it all is.

Thank you.

Most sincerely,

Bruce

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