•Section 5.1, the
“Cosmological Principle”
–Geodesics are
“world-lines” of galaxies and do not intersect
except at a singular point in the past. Weyl’s idea predates
Hubble’s law.
–Fundamental observers on
each world line, each with standard clock measuring
cosmic time from that singular point.
–
•“We are not located at any special location in the universe.”