Common

A pattern is considered common if it frequently arises after several generations of a random starting pattern (known as a soup).

What "frequently" means in the above definition is subject to debate. However, the concept is most often used in the context of commonness–how common one object is as compared to other objects, especially other similar objects, which can be measured. For more on this, see Frequency class.

Frequency of stable objects

Achim Flammenkamp compiled a list in 2004 of the 100 most common still lifes, oscillators, and spaceships from his census in which he evolved 1,829,196 randomly seeded 2048×2048 tori at an initial density of 0.375.

Adam P. Goucher's Catagolue census also compiles lists of common and naturally occurring objects, including the total number of occurrences for each object.

See also

• Most common objects on Catagolue
• List of common still lifes
• List of common oscillators