There is an idea that was mentioned by others in earlier discussion. The idea is that components / devices can be viewed as "black boxes", like this:

Code: Select all

```
x = 243, y = 405, rule = LifeHistory
157.51D$157.D49.D$157.D49.D$157.D49.D$157.D49.D$157.D49.D$157.D49.D$
157.D49.D$157.D49.D$157.D15.5D3.5D21.D$157.D15.D7.D3.D21.D$157.D15.D
7.D3.D21.D$157.D15.D7.D3.D21.D$157.D9.3D3.5D3.5D21.D$157.D9.D.D7.D7.D
21.D$157.D9.3D7.D7.D21.D$157.D9.D9.D7.D21.D$157.D9.D5.5D3.5D21.D$157.
D49.D$157.D49.DB$157.D49.D2B$157.D49.D3B$157.D11.D37.D4B$157.D11.D5.
3D29.D.3BD$157.D11.D5.D31.D2.DBDB$157.D9.3D5.D31.D3.2D2B$157.D9.D.D5.
D31.D4.4B$157.D9.3D2.D2.D3.D7.5D15.D5.4B$157.D28.7D14.D6.4B$157.D27.
3D3.3D13.D7.4B$157.D27.2D5.2D13.D8.4B$157.D27.2D5.2D13.D9.4B$157.D33.
3D13.D10.4B$157.D32.3D14.D11.4B$157.D31.3D15.D12.4B$157.D31.2D16.D13.
4B$157.D31.2D16.D14.4B$157.D31.2D16.D15.4B$157.D49.D16.BDBD$157.D49.D
17.B2DB$157.D31.2D16.D18.D3B$157.D31.2D16.D19.4B$157.D49.D20.4B$157.D
49.D21.4B$157.D49.D22.4B$156.BD49.D23.4B$155.2B51D24.4B$154.4B75.4B$
153.4B77.4B$152.4B79.4B$151.4B81.4B$150.3DB83.4B$149.3BD85.3BD$148.3B
D87.3BD$147.4B89.3D$146.4B$145.4B$144.4B$143.4B$142.4B$141.4B$140.4B$
139.4B$138.4B$137.4B$136.D3B$135.B2DB$134.BDBD$133.4B$132.4B$131.4B$
130.4B$129.4B$128.4B$127.4B$126.4B$125.4B$124.4B$123.4B$122.4B$121.2D
2B$120.DBDB$119.3BD$118.4B$117.4B$116.4B$115.4B$114.4B13$157.51D$157.
D49.D$157.D36.2A.A9.D$157.D30.A.2A.A.A.3A7.D$157.D30.2A.A.A.A4.A6.D$
157.D34.A.A.ABABA6.D$157.D36.A.A.2A4.2A.D$157.D24.2A9.ABA4B4.A2.D$
157.D22.2B2AB6.3BA2B4.BA.A2.D$157.D22.4B6.5B4.B.B2A3.D$157.D22.9B.6B
2.4B5.D$157.D23.12B2A7B5.D$157.D18.2A3.6BA5B3AB2A3B5.D$157.D19.A3.5BA
BA9B2A3B4.D$157.D19.A.A6BA2BA7BAB.4B3.D$157.D15.A4.2A2.5BABA8B3.4B2.D
$157.D15.3A7.4B3A6B6.4B.D$157.D18.A6.10BA4B5.4BD$157.D17.2A6.8BA2B2A
3B5.3BD$157.D23.2A9B3A5B5.2BDB$157.D22.A2BA2.3B.3BA7B5.BD2B$157.D22.B
ABA6.10B7.D3B$157.D20.4BA7.7B10.D4B$157.D20.3B10.4B12.D.3BA$157.D19.
4B10.6B10.D2.ABAB$157.D18.4B15.2A10.D3.2A2B$157.D17.4B16.A11.D4.4B$
157.D16.4B18.3A8.D5.4B$157.D15.4B21.A8.D6.4B$157.D14.4B31.D7.4B$157.D
13.4B32.D8.4B$157.D12.4B33.D9.4B$157.D11.4B34.D10.4B$157.D10.4B35.D
11.4B$157.D9.4B36.D12.4B$157.D8.4B37.D13.4B$157.D7.2A2B38.D14.4B$157.
D6.2B2A39.D15.4B$157.D5.2BAB40.D16.BABA$157.D4.4B41.D17.B2AB$157.D3.
4B42.D18.A3B$157.D2.4B43.D19.4B$157.D.4B44.D20.4B$157.D4B45.D21.4B$
157.D3B46.D22.4B$156.BD2B47.D23.4B$155.2B51D24.4B$154.4B75.4B$153.4B
77.4B$152.4B79.4B$151.4B81.4B$150.3AB83.4B$149.3BA85.3BA$148.3BA87.3B
A$147.4B89.3A$146.4B$145.4B$144.4B$143.4B$142.4B$141.4B$140.4B$139.4B
$138.4B$137.4B$136.A3B$135.B2AB$134.BABA$133.4B$132.4B$131.4B$130.4B$
129.4B$128.4B$127.4B$126.4B$125.4B$124.4B$123.4B$122.4B$121.2A2B$120.
ABAB$119.3BA$118.4B$117.4B$116.4B$115.4B$114.4B$113.4B$112.4B$111.4B$
110.4B$109.4B$108.4B$107.4B$106.2A2B$105.2B2A$104.2BAB$103.4B$102.4B$
101.4B52.51D$100.4B53.D49.D$99.4B54.D36.2A.A9.D$98.4B55.D30.A.2A.A.A.
3A7.D$97.4B56.D30.2A.A.A.A4.A6.D$96.4B57.D34.A.A.ABABA6.D$95.4B58.D
36.A.A.2A4.2A.D$94.4B59.D24.2A9.ABA4B4.A2.D$93.4B60.D22.2B2AB6.3BA2B
4.BA.A2.D$92.4B61.D22.4B6.5B4.B.B2A3.D$91.3AB62.D22.9B.6B2.4B5.D$90.
3BA63.D23.12B2A7B5.D$89.3BA64.D18.2A3.6BA5B3AB2A3B5.D$88.4B65.D19.A3.
5BABA9B2A3B4.D$87.4B66.D19.A.A6BA2BA7BAB.4B3.D$86.4B67.D15.A4.2A2.5BA
BA8B3.4B2.D$85.4B68.D15.3A7.4B3A6B6.4B.D$84.4B69.D18.A6.10BA4B5.4BD$
83.4B70.D17.2A6.8BA2B2A3B5.3BD$82.4B71.D11.3B3.B5.2A9B3A5B5.2BDB$81.
4B72.D11.7B4.A2BA2.3B.3BA7B5.BD2B$80.4B73.D10.2A7B3.BABA6.10B7.D3B$
79.4B74.D10.2A12BA7.7B10.D4B$78.4B75.D11.B.10B10.4B12.D.3BA$77.A3B76.
D13.10B10.6B10.D2.ABAB$76.B2AB77.D13.11B13.2A10.D3.2A2B$75.BABA78.D
13.11B13.A11.D4.4B$74.4B79.D6.2A5.11B14.3A8.D5.4B$73.4B80.D7.A6.B3A5B
17.A8.D6.4B$72.4B81.D6.A5.2BA3BA7B23.D7.4B$71.4B82.D6.2A3.2BA5BA8B21.
D8.4B$70.4B83.D8.A2.2BA5BA8B21.D9.4B$69.4B84.D6.2A2.A2BA5BA8B21.D10.
4B$68.4B85.D5.A2.2ABA2BA3BA9B21.D11.4B$67.4B86.D5.3A2.AB.2B3A8B.B2A
19.D12.4B$66.4B87.D8.2A2B2.5B.6B.BA.A18.D13.4B$65.4B88.D5.2A.B.B3.5B.
5B5.A18.D14.4B$64.4B89.D6.A.2AB2.5B3.4B5.2A17.D15.4B$63.4B90.D6.A.BAB
.5B5.3B24.D16.BABA$62.2A2B91.D7.2A4.4B6.B25.D17.B2AB$61.ABAB92.D4.A6.
8B30.D18.A3B$60.3BA93.D2.3A6.2A4.2A30.D19.4B$59.4B94.D.A10.A4.A31.D
20.4B$58.4B95.D.2A6.3A6.3A28.D21.4B$57.4B96.D3B6.A10.A28.D22.4B$56.4B
96.BDB48.D23.4B$55.4B96.2B51D24.4B$54.4B96.4B75.4B$53.4B96.4B77.4B$
52.4B96.4B79.4B$51.4B96.4B81.4B$50.4B96.3AB83.4B$49.4B96.3BA85.3BA$
48.4B96.3BA87.3BA$47.2A2B96.4B89.3A$46.2B2A96.4B$45.2BAB96.4B$44.4B
96.4B$43.4B96.4B$42.4B96.4B$41.4B96.4B$40.4B96.4B$39.4B96.4B$38.4B96.
4B$37.4B96.4B$36.4B96.A3B$35.4B96.B2AB$34.4B96.BABA$33.4B96.4B$32.3AB
96.4B$31.3BA96.4B$30.3BA96.4B$29.4B96.4B$28.4B96.4B$27.4B96.4B$26.4B
96.4B$25.4B96.4B$24.4B96.4B$23.4B96.4B$22.4B96.4B$21.4B96.2A2B$20.4B
96.ABAB$19.4B96.3BA$18.A3B96.4B$17.B2AB96.4B$16.BABA96.4B$15.4B96.4B$
14.4B96.4B$13.4B96.4B$12.4B96.4B$11.4B96.4B$10.4B96.4B$9.4B96.4B$8.4B
96.4B$7.4B96.4B$6.4B96.2A2B$5.4B96.2B2A$4.4B96.2BAB$3.2A2B96.4B$2.ABA
B96.4B$.3BA96.4B$4B96.4B$3B96.4B$2B96.4B$B96.4B$96.4B$95.4B$94.4B$93.
4B$92.4B$91.3AB$90.3BA$89.3BA$88.4B$87.4B$86.4B$85.4B$84.4B$83.4B$82.
4B$81.4B$80.4B$79.4B$78.4B$77.A3B$76.B2AB$75.BABA$74.4B$73.4B$72.4B$
71.4B$70.4B$69.4B$68.4B$67.4B$66.4B$65.4B$64.4B$63.4B$62.2A2B$61.ABAB
$60.3BA$59.4B$58.4B$57.4B$56.4B$55.4B$54.4B$53.4B$52.4B$51.4B$50.4B$
49.4B$48.4B$47.2A2B$46.2B2A$45.2BAB$44.4B$43.4B$42.4B$41.4B$40.4B$39.
4B$38.4B$37.4B$36.4B$35.4B$34.4B$33.4B$32.3AB$31.3BA$30.3BA$29.4B$28.
4B$27.4B$26.4B$25.4B$24.4B$23.4B$22.4B$21.4B$20.4B$19.4B$18.A3B$17.B
2AB$16.BABA$15.4B$14.4B$13.4B$12.4B$11.4B$10.4B$9.4B$8.4B$7.4B$6.4B$
5.4B$4.4B$3.2A2B$2.ABAB$.3BA$4B$3B$2B$B!
```

As long as one does not rely on "internal implementation details" while using a component like this, there is no functional difference between a glider gun engine supported by a periodic glider stream, and a trivial combination of an eater and a gun. In a finished working pattern, one implementation can be freely replaced with another implementation (whenever such a replacement makes sense and is possible geometrically), without breaking anything.

In a nontrivial construction, there can be several periodic streams following different tracks. A construction may become nontrivial, and still remain entirely within the "physical level of understanding", without having any logic or choices. For example, the following engineered glider gun uses a dependent reflector (as well as other components):Hippo.69 wrote: ↑July 23rd, 2024, 11:09 am[...] But I am not too much fixed on terminology, "the patterns speak for themselves".

But yes, I think about patterns in physical meaning ... about glider reflectors rather the signal reflectors.

I can imagine only "create an oscialtor task", where I could end up with a periodic stream of gliders, wanting the stream in another phase/position/direction. [...]

Code: Select all

```
#C Source: https://conwaylife.com/forums/viewtopic.php?p=153800#p153800
x = 137, y = 86, rule = B3/S23
42b2o$42bobo$44bo4b2o$40b4ob2o2bo2bo$40bo2bobobobob2o23b2o$43bobobobo
25bobo33bo$44b2obobo19b2o4bo34bobo$48bo18bo2bo2b2ob4o28b3obo$67b2obob
obobo2bo27bo4bob2o$34b2o34bobobobo30bobobobobo$35bo7b2o25bobob2o26b2o
4b2obobo$35bobo5b2o26bo31bo8bobo11b2o$36b2o65bobo7bo12bo$84b2o18b2o18b
obo$43b3o38bo39b2o$45bo28b3o5bobo$44bo28bo3bo4b2o37b2o$72bo5bo39b2obo
$72bo5bo25bobo13bobobo$46b2o24bo5bo10bo6b2o6b2o$46bo26bo3bo11b3o3bo2b
o6bo8b2o12bo$47b3o7bo16b3o15bo3bo2bo14b2o11b2o$49b3o6b2o31b2o39bo$52b
o4b2o13b2o26bo19b2o8b3o$47b4obo20bo20b2o2bo2bo10b2o15bo$47bo2bob2o16b
3o21b5ob2o4b2o5bo10bo4b2o$70bo22bo2bobo3bo3b2o2b3o4b2o$51b3o39bobo2bo
b2o8bo6b2o14b2o$29bo20bo2bo41b2o3b2o30bo2bo$29b2o19b2o5bobo6b2obo16b2o
7b5o32b2obo$28bobo26b2o7b2ob3o13b2o9bo18b2o18b2o$58bo13bo14bo28bo15b2o
2bo$66b2ob3o31b2o11bobo12bo2b2o$67bobo13b2o18bobo11b2o11bob2o$57b2o8b
obo12bobo7bo12bo15b2o8bo2b2o$57b2o9bo13bo8bobo11b2o14b2o10bo2bo$81b2o
4b2obobo41b2o$86bobobobobo20b2o$86bo4bob2o14b2o4b2o8bo$87b3obo18bo14b
o$66bo22bobo18bob2o4bobo3bo$64b3o23bo20bo3bo4bo4b2o$3b2o58bo56bo3bobo
$4bo9b2o46bobo48b2o$2bo10bobo29b2o9b2o5bo51b2obo5bo3b2o$2b5o8bo5b2o23b
o8b3o57b3o10bo$7bo13bo24bobo6bo2bo6bo47bo2bo12b3o$4b3o12bobo25b2o7b3o
3bobobo49bo4bo9bo$3bo15b2o35b3o3b2o2bo46bo7b2o$3bob2o59b2o$b2o3bo3b2o
$o2b3o5bo$2obo$3bo40b2o71b2o$3b2o40bo$45bobo16bo$46b2o14b3o$11b2o9b2o
37bo53bobo$12bo8b2o29b2o7b2o53bo$9b3o11bo27b3o63bo$9bo40b2o7bo53bo9bo
b2o$49b2o7b3o52bo9b2obo$50b2o8bo31bo$36bo22b3o21b2o5b3o$36b3o17b2o2b2o
22bo4bo24b3o$39bo17bo3bo22bobo3bo7b2o14bo2bo$38b2o17bo27bobo3bo7bo12b
o3b2o$57bo2bo25bo3b2o7bobo10b3o$44b2o9bo2b2o40b2o11bo7bo$40b3o11bo3bo
61bobo$36bob2o2bo4bo7bobo13b4o28b2o6bo9b2o$35b5o4bo11bo14b2ob2o11b2o13b
o2bo4b6o$35b2ob4o2bo24bo2bo2b2o10bobo13bobo3bo7bo$37b2o5b2o3bo19b3o3b
o11bo5bo10bo5bo6bo$39b2ob2o3b2obo17bo2bo2bo17bo2b2o13bo$39bobobo6bo17b
obo20bo5bo13bobo$50b2o17b2o23b2ob2o$40b3o17bo29bo3b4o$37bo2b2o17bobo29b
o4bo$36bobob2o17b2o31b3o$36bobobobo25b2o24bo$33b2obobobobo2bo22bo20b2o
$33bo2bo2b2ob4o23bo20bo7b2o$35b2o4bo26b2o17b3o9bo10bo$41bobo43bo8b3o12b
o$42b2o52bo12b3o!
#C [[ MAXGRIDSIZE 9 KILLGLIDERS THEME Catagolue ]]
```