Some have complained that in the opening sketch, Arthur could not have been talking to Liberace, as he first guesses. Liberace died February 4, 1987, five weeks before this program aired. However, this possibly is a bit unfair, since the episode was no doubt produced and filmed long before Liberace's death, so at that time, Liberace was quite alive.
Person on the Street: (upon asked "What is a tessellation?") That I heard on Sesame Street.
That Fibonacci sequence would play a more integral role in the first Mathnet mystery of the second season. In "The Case of the Willing Parrot," as seen beginning in Episode 201, Little Louie uttered the start of the sequence "1, 1, 2, 3" constantly.
The Fibonacci sequence was a subtle part of the title sequence used on Square One TV's first three seasons. The squares bearing images of the program's recurring characters, spiraled onto the screen and settled in a Fibonacci order. The Mathnet image was 13x13, the next image was 8x8, then 5x5, 3x3, 2x2, 1x1 and 1x1.