# Talk:Titanic toroidal traveler

## Replicator

The detached back part is a replicator, not just replicator-like. --Axaj 19:09, 23 December 2009 (UTC)

It's not regular enough to be a replicator in the classical sense. Replicators in HighLife etc. return to the same (fixed) population after exponentially increasing periods of time. The Titanic Toroidal Traveller does not have this property. If you're still not convinced, note that this pseudo-replicator does not produce *exact copies* of itself, without leaving unwanted debris.

Maybe you're getting confused with the true replicator on a 6-cell cylinder, the T-tetromino.

Just for clarification, this is what the back part of the TTT looks like:

x = 17, y = 739, rule = S23/B3
b3o3b3o3b3o\$\$bobo3bobo3bobo\$bbo5bo5bo10\$bbo5bo5bo\$bobo3bobo3bobo\$\$b3o
3b3o3b3o7\$b3o3b3o3b3o5\$b3o3b3o3b3o\$bbo5bo5bo4\$bbo5bo5bo\$b3o3b3o3b3o8\$b
3o3b3o3b3o\$\$o3bobo3bobo3bo\$o3bobo3bobo3bo\$o3bobo3bobo3bo\$obobobobobobo
bobo\$b3o3b3o3b3o\$\$b3o3b3o3b3o\$o3bobo3bobo3bo\$ooboobooboobooboo15\$b3o3b
3o3b3o\$\$o3bobo3bobo3bo\$o3bobo3bobo3bo\$o3bobo3bobo3bo\$\$b3o3b3o3b3o3\$oob
oobooboobooboo\$ooboobooboobooboo8\$b3o3b3o3b3o14\$b3o3b3o3b3o\$\$o3bobo3bo
bo3bo4\$b3o3b3o3b3o\$b3o3b3o3b3o\$\$b3o3b3o3b3o\$b3o3b3o3b3o4\$o3bobo3bobo3b
o\$\$b3o3b3o3b3o6\$ooboobooboobooboo\$ooboobooboobooboo26\$b3o3b3o3b3o\$obob
obobobobobobo\$o3bobo3bobo3bo\$b3o3b3o3b3o4\$ooboobooboobooboo\$oobooboob
oobooboo12\$ooboobooboobooboo\$ooboobooboobooboo4\$ooboobooboobooboo\$oob
oobooboobooboo6\$bbo5bo5bo\$bobo3bobo3bobo\$o3bobo3bobo3bo\$bobo3bobo3bobo
\$bbo5bo5bo\$\$bbo5bo5bo\$bobo3bobo3bobo\$o3bobo3bobo3bo\$bobo3bobo3bobo\$bbo
5bo5bo6\$ooboobooboobooboo\$ooboobooboobooboo6\$bbo5bo5bo\$b3o3b3o3b3o\$obo
bobobobobobobo\$ooboobooboobooboo\$obobobobobobobobo\$b3o3b3o3b3o\$\$b3o3b
3o3b3o\$obobobobobobobobo\$ooboobooboobooboo\$obobobobobobobobo\$b3o3b3o3b
3o\$bbo5bo5bo\$\$bbo5bo5bo\$b3o3b3o3b3o\$obobobobobobobobo\$oobooboobooboob
oo\$obobobobobobobobo\$b3o3b3o3b3o\$bbo5bo5bo4\$b3o3b3o3b3o\$o3bobo3bobo3bo
\$o3bobo3bobo3bo\$o3bobo3bobo3bo\$b3o3b3o3b3o\$\$bbo5bo5bo\$b3o3b3o3b3o\$oob
oobooboobooboo\$b3o3b3o3b3o\$bbo5bo5bo17\$ooboobooboobooboo\$\$ooboobooboob
ooboo\$\$bbo5bo5bo19\$bbo5bo5bo\$bobo3bobo3bobo\$bobo3bobo3bobo\$bbo5bo5bo4\$
ooboobooboobooboo\$ooboobooboobooboo7\$ooboobooboobooboo\$oobooboobooboob
oo6\$bbo5bo5bo\$bobo3bobo3bobo\$bobo3bobo3bobo\$bbo5bo5bo3\$bbo5bo5bo\$bbo5b
o5bo\$b3o3b3o3b3o20\$bbo5bo5bo\$b3o3b3o3b3o\$ooboobooboobooboo\$b3o3b3o3b3o
\$bbo5bo5bo4\$b3o3b3o3b3o\$b3o3b3o3b3o\$bobo3bobo3bobo\$\$ooboobooboobooboo\$
ooboobooboobooboo\$o3bobo3bobo3bo\$bobo3bobo3bobo\$bbo5bo5bo4\$bbo5bo5bo\$
ooboobooboobooboo\$o3bobo3bobo3bo\$ooboobooboobooboo\$bbo5bo5bo6\$bbo5bo5b
o\$bbo5bo5bo\$\$bbo5bo5bo\$bbo5bo5bo27\$ooboobooboobooboo\$ooboobooboobooboo
5\$ooboobooboobooboo\$bobo3bobo3bobo\$bbo5bo5bo4\$ooboobooboobooboo7\$ooboo
booboobooboo10\$bbo5bo5bo\$bobo3bobo3bobo\$o3bobo3bobo3bo\$bobo3bobo3bobo\$
bbo5bo5bo9\$bbo5bo5bo\$bbo5bo5bo\$bbo5bo5bo9\$bbo5bo5bo\$bobo3bobo3bobo\$bob
o3bobo3bobo\$bbo5bo5bo13\$ooboobooboobooboo\$ooboobooboobooboo3\$bbo5bo5bo
\$bobo3bobo3bobo\$bobo3bobo3bobo\$bbo5bo5bo5\$b3o3b3o3b3o\$bbo5bo5bo3\$bbo5b
o5bo\$bobo3bobo3bobo\$\$bobo3bobo3bobo\$b3o3b3o3b3o\$o3bobo3bobo3bo\$5ob5ob
5o12\$b3o3b3o3b3o\$ooboobooboobooboo\$\$bobo3bobo3bobo\$\$b3o3b3o3b3o\$bbo5bo
5bo8\$ooboobooboobooboo\$ooboobooboobooboo15\$bbo5bo5bo\$bbo5bo5bo\$bbo5bo
5bo5\$bbo5bo5bo\$bbo5bo5bo\$bbo5bo5bo\$\$bbo5bo5bo\$bbo5bo5bo\$bbo5bo5bo\$\$bbo
5bo5bo\$bobo3bobo3bobo\$bobo3bobo3bobo\$bbo5bo5bo9\$ooboobooboobooboo\$oob
oobooboobooboo\$\$bbo5bo5bo\$bobo3bobo3bobo\$o3bobo3bobo3bo\$o3bobo3bobo3bo
\$ooboobooboobooboo22\$b3o3b3o3b3o\$o3bobo3bobo3bo\$\$o3bobo3bobo3bo\$b3o3b
3o3b3o4\$b3o3b3o3b3o\$b3o3b3o3b3o\$o3bobo3bobo3bo\$o3bobo3bobo3bo\$o3bobo3b
obo3bo\$b3o3b3o3b3o\$\$b3o3b3o3b3o\$o3bobo3bobo3bo\$o3bobo3bobo3bo\$o3bobo3b
obo3bo\$b3o3b3o3b3o\$b3o3b3o3b3o5\$bbo5bo5bo\$bobo3bobo3bobo\$bobo3bobo3bob
o\$bbo5bo5bo13\$b3o3b3o3b3o\$bbo5bo5bo15\$bbo5bo5bo\$bobo3bobo3bobo\$bobo3bo
bo3bobo\$bbo5bo5bo4\$bbo5bo5bo\$bobo3bobo3bobo\$o3bobo3bobo3bo\$bobo3bobo3b
obo\$bbo5bo5bo7\$bbo5bo5bo\$b3o3b3o3b3o\$ooboobooboobooboo\$oobooboobooboob
oo3\$ooboobooboobooboo\$5ob5ob5o\$b3o3b3o3b3o4\$bbo5bo5bo\$bbo5bo5bo\$bobo3b
obo3bobo\$bbo5bo5bo\$bbo5bo5bo18\$bbo5bo5bo\$bbo5bo5bo\$bobo3bobo3bobo\$bbo
5bo5bo\$bbo5bo5bo\$\$bbo5bo5bo\$bbo5bo5bo\$bobo3bobo3bobo\$bbo5bo5bo\$bbo5bo
5bo8\$bbo5bo5bo\$b3o3b3o3b3o\$b3o3b3o3b3o\$bbo5bo5bo\$\$ooboobooboobooboo\$b
3o3b3o3b3o\$bbo5bo5bo\$\$bbo5bo5bo\$b3o3b3o3b3o\$ooboobooboobooboo\$\$bbo5bo
5bo\$b3o3b3o3b3o\$b3o3b3o3b3o\$bbo5bo5bo8\$bbo5bo5bo\$bbo5bo5bo\$bobo3bobo3b
obo\$bbo5bo5bo\$bbo5bo5bo\$\$bbo5bo5bo\$bbo5bo5bo\$bobo3bobo3bobo\$bbo5bo5bo\$
bbo5bo5bo!

By comparison, this is what the true replicator looks like:

x = 17, y = 263, rule = S23/B3
b3o3b3o3b3o\$o3bobo3bobo3bo\$5ob5ob5o\$o3bobo3bobo3bo\$b3o3b3o3b3o\$\$b3o3b
3o3b3o\$o3bobo3bobo3bo\$5ob5ob5o\$o3bobo3bobo3bo\$b3o3b3o3b3o6\$bbo5bo5bo\$b
obo3bobo3bobo\$\$bbo5bo5bo14\$bbo5bo5bo\$\$bobo3bobo3bobo\$bbo5bo5bo6\$b3o3b
3o3b3o\$o3bobo3bobo3bo\$5ob5ob5o\$o3bobo3bobo3bo\$b3o3b3o3b3o\$\$b3o3b3o3b3o
\$o3bobo3bobo3bo\$5ob5ob5o\$o3bobo3bobo3bo\$b3o3b3o3b3o18\$b3o3b3o3b3o\$o3bo
bo3bobo3bo\$5ob5ob5o\$o3bobo3bobo3bo\$b3o3b3o3b3o\$\$b3o3b3o3b3o\$o3bobo3bob
o3bo\$5ob5ob5o\$o3bobo3bobo3bo\$b3o3b3o3b3o6\$bbo5bo5bo\$bobo3bobo3bobo\$\$bb
o5bo5bo14\$bbo5bo5bo\$\$bobo3bobo3bobo\$bbo5bo5bo6\$b3o3b3o3b3o\$o3bobo3bobo
3bo\$5ob5ob5o\$o3bobo3bobo3bo\$b3o3b3o3b3o\$\$b3o3b3o3b3o\$o3bobo3bobo3bo\$5o
b5ob5o\$o3bobo3bobo3bo\$b3o3b3o3b3o18\$b3o3b3o3b3o\$o3bobo3bobo3bo\$5ob5ob
5o\$o3bobo3bobo3bo\$b3o3b3o3b3o\$\$b3o3b3o3b3o\$o3bobo3bobo3bo\$5ob5ob5o\$o3b
obo3bobo3bo\$b3o3b3o3b3o6\$bbo5bo5bo\$bobo3bobo3bobo\$\$bbo5bo5bo14\$bbo5bo
5bo\$\$bobo3bobo3bobo\$bbo5bo5bo6\$b3o3b3o3b3o\$o3bobo3bobo3bo\$5ob5ob5o\$o3b
obo3bobo3bo\$b3o3b3o3b3o\$\$b3o3b3o3b3o\$o3bobo3bobo3bo\$5ob5ob5o\$o3bobo3bo
bo3bo\$b3o3b3o3b3o18\$b3o3b3o3b3o\$o3bobo3bobo3bo\$5ob5ob5o\$o3bobo3bobo3bo
\$b3o3b3o3b3o\$\$b3o3b3o3b3o\$o3bobo3bobo3bo\$5ob5ob5o\$o3bobo3bobo3bo\$b3o3b
3o3b3o6\$bbo5bo5bo\$bobo3bobo3bobo\$\$bbo5bo5bo14\$bbo5bo5bo\$\$bobo3bobo3bob
o\$bbo5bo5bo6\$b3o3b3o3b3o\$o3bobo3bobo3bo\$5ob5ob5o\$o3bobo3bobo3bo\$b3o3b
3o3b3o\$\$b3o3b3o3b3o\$o3bobo3bobo3bo\$5ob5ob5o\$o3bobo3bobo3bo\$b3o3b3o3b3o
!

--Calcyman 13:01, 24 December 2009 (UTC)

I don't think it needs to be regular to be a replicator. For instance, the replicator in B36/S245 grows ver irregularly, but is still classified as a replicator. --Axaj 23:16, 4 January 2010 (UTC)
The replicator in B36/S245 doesn't grow irregularly at all: it returns to the minimal population after an exponentially increasing number of generations (400, 1600, 6400, 25600...), and so does the replicator in HighLife. Moreover, it copies itself exactly, unlike the detached back part of the TTT. --Calcyman 18:59, 5 January 2010 (UTC)