Note that for any radius r greater than 2,600 that the UPPER LIMIT for pi is LESS than 4/√φ, which proves it to be a false value for pi that overstates the true value of pi. Why 2,600? That's because the difference between traditional pi and 4/√φ is a little less than 1 in 1,000, so it takes a level of precision slightly more than that to reveal the truth about their differences, and this version adds an extra square on the grid for more margin of proof yet.