# “\ Conway's Game of Life, or Occam's Razor Dulled MARKER Genesis \ ANS Forth this life is remains and 1 CHARS CONSTANT /Char : C+! ( char c-addr -- ) DUP >R C@ + R> C! ; \ the universal pattern 25 CONSTANT How-Deep 80 CONSTANT How-Wide How-Wide How-Deep * 1- \ 1- prevents scrolling on my screen CONSTANT Homes \ world wrap : World CREATE ( -- ) Homes CHARS ALLOT DOES> ( u -- c-addr ) SWAP Homes + Homes MOD CHARS + ; World old World new \ biostatistics \ begin hexadecimal numbering HEX \ hex xy : x holds life , y holds neighbors count 10 CONSTANT Alive \ 0y = not alive \ Conway's rules: \ a life depends on the number of \ its next-door neighbors \ it dies if it has fewer than 2 neighbors : Lonely ( char -- flag ) 12 < ; \ it dies if it has more than 3 neighbors : Crowded ( char -- flag ) 13 > ; : -Sustaining ( char -- flag ) DUP Lonely SWAP Crowded OR ; \ it is born if it has exactly 3 neighbors : Quickening ( char -- flag ) 03 = ; \ back to decimal DECIMAL \ compass points : N ( i -- j ) How-Wide - ; : S ( i -- j ) How-Wide + ; : E ( i -- j ) 1+ ; : W ( i -- j ) 1- ; \ census : Home+! ( -1|1 i -- ) >R Alive * R> new C+! ; : Neighbors+! ( -1|0|1 i -- ) 2DUP N W new C+! 2DUP N new C+! 2DUP N E new C+! 2DUP W new C+! ( i ) 2DUP E new C+! 2DUP S W new C+! 2DUP S new C+! S E new C+! ; : Bureau-of-Vital-Statistics ( -1|1 i -- ) 2DUP Home+! Neighbors+! ; \ mortal coils CHAR ? CONSTANT Soul BL CONSTANT Body \ at home : Home ( char i -- ) How-Wide /MOD AT-XY EMIT ; \ changes, changes : Is-Born ( i -- ) Soul OVER Home 1 SWAP Bureau-of-Vital-Statistics ; : Dies ( i -- ) Body OVER Home -1 SWAP Bureau-of-Vital-Statistics ; \ the one and the many : One ( c-addr -- i ) 0 old - /Char / ; : Everything ( -- ) 0 old Homes BEGIN DUP WHILE OVER C@ DUP Alive AND IF -Sustaining IF OVER One Dies THEN ELSE Quickening IF OVER One Is-Born THEN THEN 1 /STRING REPEAT 2DROP How-Wide 1- How-Deep 1- AT-XY ; \ in the beginning : Void ( -- ) 0 old Homes BLANK ; \ spirit : Voice ( -- c-addr u ) PAGE ." Say: " 0 new DUP Homes ACCEPT ; \ subtlety : Serpent ( -- ) 0 2 AT-XY ." Press a key for knowledge." KEY DROP 0 2 AT-XY ." Press space to re-start, Esc to escape life." ; \ the primal state : Innocence ( -- ) Homes 0 DO I new C@ Alive / I Neighbors+! LOOP ; \ children become parents : Passes ( -- ) 0 new 0 old Homes CMOVE ; \ a garden : Paradise ( c-addr u -- ) >R How-Deep How-Wide * How-Deep 2 MOD 0= How-Wide AND - R@ - 2/ old R> CMOVE 0 old Homes 0 DO COUNT BL DUP IF Soul I Home THEN Alive AND I new C! LOOP DROP Serpent Innocence Passes ; : Creation ( -- ) Void Voice Paradise ; \ the human element 1000 VALUE Ideas : Dreams ( -- ) Ideas MS ; 1000 CONSTANT Images : Meditation ( -- ) Images MS ; \ free will : Action ( -- char ) KEY? DUP IF DROP KEY DUP BL = IF Creation THEN THEN ; \ environmental dependence 27 CONSTANT Escape \ history : Goes-On ( -- ) BEGIN Everything Passes Dreams Action Meditation Escape = UNTIL ; \ a vision : Life ( -- ) Creation Goes-On ; Life \ 950724 + 970703 + ”

—See Krishna Myneni, Of Poetry Life, and Computers.

# Conway's game of life

I remember learning about the game of life in high school after our unit on fractals.

“The Game of Life is not your typical computer game. It is a ‘cellular automaton’, and was invented by Cambridge mathematician John Conway.

This game became widely known when it was mentioned in an article published by Scientific American in 1970. It consists of a collection of cells which, based on a few mathematical rules, can live, die or multiply. Depending on the initial conditions, the cells form various patterns throughout the course of the game.

The rules:

For a space that is ‘populated’: Each cell with one or no neighbors dies, as if by loneliness. Each cell with four or more neighbors dies, as if by overpopulation.Each cell with two or three neighbors survives.

For a space that is ‘empty’ or ‘unpopulated’: Each cell with three neighbors becomes populated.”

If you want to play the game for a bit, check out this link.

~~~

“Life is one of the simplest examples of what is sometimes called “emergent complexity” or “self-organizing systems.” This subject area has captured the attention of scientists and mathematicians in diverse fields. It is the study of how elaborate patterns and behaviors can emerge from very simple rules. ”

The game of life is an interesting puzzle for all scientists- economists, biologists, computer scientists, physicists… because complex systems exist everywhere.

# Google Search Easter Egg - Conway's Game Of Life

If you type into Google Search: Conway’s Game Of Life, you will be treated to an online demonstration right within the web page (as seen in the above gif).

Discovered via roomthily: