Those look suspiciously like p240 guns, not p144.

gmc_nxtman wrote:Any thoughts? (I think it's a simple contraption, but the concept of using a keeper might be new and I think it's pretty cool)

Nice! This is certainly a new unconventional alliance between Herschel technology, p240 guns, and edge-repair spaceships. The idea of keeping a still life at the edge of a spaceship lane

has been around for

a while.

It looks as if you could easily get rid of the Snark by putting the whole mechanism on one side of the spaceship lane:

Code: Select all

```
x = 97, y = 117, rule = B3/S23
26bo17bo5b2o$25b2o15b3o4bo2bo$3bo5b2o13b2o4b2o9bo10bo$bo3bo3b3o11b3o4b
2o2b2o5b2o9bo$5bo5b2obo9b2o4b2o2b2o14bobo$o5bo4bo2bo10b2o12bo10bobo$2o
9b2obo11bo11b3o10bo$9b3o10bo14bo3bo$9b2o9bobo13bob3obo$21b2o14b5o6b2o
3b2o$48bo5bo2$29b3o17bo3bo$28bo3bo17b3o$33bo2$8bo2b2o4b2o2bo5bo2b3o$7b
o3b3o2b3o3bo5b3o$8bo2b2o4b2o2bo23bo$45b4o$46b4o$46bo2bo$46b4o$45b4o18b
2o$45bo21b2o5b2o$74b2o3$47bo5b2o17b2o$45b3o6bo17b2o$44bo9bobo21b2o$44b
2o9b2o21b2o$29b2o$30bo$30bob2o25bo2bo$31bo2bo21b2obo2b2o$32b2o22b2obo
4bo$47b2o7b2o$47b2o9bo4b2o$58b2ob2o3$56bo3b2o$55bobo3bo20bo$54bobo3bo
19b3o$50b2obobo3bo19bo$50b2obo2b4obo17b2o$54bobo3bobo$50b2ob2o2bo2bobo
$51bobo2b2o3bo$39b2o10bobo$39b2o11bo7$83bo$63b2o17bobo$62bobo17bobo$
62bo20bo$45bo15b2o23b3o$44bobo26b2o18b3o$43bob2o26b2o11bobo5bo$37b2o3b
2ob2o42bo$37b2o4bob2o43bobo$44bobo41bo2bob2o$45bo44b2obo2bo$58bo31b2o
4bo$57b3o28bo5bo$56b5o29b3o$37b2o16b2o3b2o31b3o$38bo55b3o$38bobo7b2o
42b2o2bo$39b2o7b2o43bo$45b2o6b2o4bo32b2o$44b3o5bo6bo32b2o$45b2o6b5o36b
3o$48b2o$48b2o$40b2o53b2o$40b2o53b2o$94b2o4$40bo17b2o$38b2ob2o7b2o5bob
o$51b2o6bo$37bo5bo6bo2$37b2obob2o3$43b2o$42bobo8b3o$43bo8bo3bo$42b2o8b
o3bo$42b3o8b3o$43b2o$41bo3$53b3o$42bo9bo3bo$41b3o8bo3bo$40b5o8b3o$39b
2o3b2o$40b5o$40bo3bo$41bobo$42bo3$42b2o$42b2o!
```

In general it's a very difficult problem to sort out what object or constellation can be placed in this way, that produces the largest number of useful reconstruction signals, or that can be reconstructed with the smallest number of gliders or Herschels:

Code: Select all

```
x = 20, y = 26, rule = LifeHistory
2A4.A$A.A2.A.A$.2A2.A.A$6.A3.A$10.A6.A$9.A.A4.3A$16.3A$12.A$12.5A$12.
A3.2A$12.A3.3A$12.4A2.A$12.A2.A$14.2A2.A$14.3A2.A$15.A3.A$15.2A2.A$
17.A$17.A$15.A2.A$16.3A$18.A2$18.2A2$17.3A!
```

The above could be built into a stable circuit that would put out a glider every time an edge-repair spaceship went past, and then rebuild the beehive+ship constellation, without needing any guns or other periodic components. Recovery time would be relatively slow, but once the constellation is in position it could detect a passing spaceship with any timing -- no mod-240 limitations like the current model.

Of course there's the existential problem: where are all these edge-repair spaceships coming from, anyway? Until there's a mechanism to build them at unpredictable intervals, it's hard to explain exactly why we need a detector for them...!