calcyman wrote:Is there a faster H-to-2G in terms of recovery time? I would be mortified if the repeat time of this conduit could not be brought down to 62 ticks (or whatever the repeat time of the 2G-to-5c/9 is, if it's greater than 62).

You must have a lot of gliders that you want to convert expensively into nothing, if you're in that much of a hurry. But I'm afraid you might be in for some minor mortification, unless you know some tricks that I don't, or if you already have a handy source of

two streams of 62-tick separation gliders in desperate need of 5c/9ification.

We don't really have glider splitters with a repeat rate faster than 78 ticks -- or 74 or 75 if you don't mind using the syringe's special cases. Most (all?) Herschel conduits can't be allowed to let their first natural gliders out below a 69-tick repeat time, anyway.

What made you mention 62 ticks? As it happens that _is_ exactly the repeat time of the 2G-to-5c/9.

Looks like your best bet for a known faster "Ee1"-rated H-to-2G is NW18T106. That will get you down to repeat time 74/75/78+, or down to 69 if you want to use some non-syringe way of feeding signals into a Herschel conduit. (Such things exist, if I remember right, but they aren't very pretty.)

`x = 133, y = 121, rule = LifeHistory`

118.2A$119.A6.A$117.A7.A.A$117.2A4.3A2.A$115.2A2.A2.A3.A.A$116.A.A2.A

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A.A.4A.A.B2A$46.4A.2A2.A2.A51.A3.A.BA.B.ABA$46.A2.A.A.A.A.2A53.A.A2.B

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47.5B.BA52.2A4.4AB2A2.2A2.A$48.4B53.2A2.A2.A3.A.A4.A.2A$40.2A6.5B53.A

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A4.2BABA5.2A$42.2AB.10B48.A.A.4A.A.B5A$44.13B47.A.BA.B.ABA6.A$44.14B

43.2A.A2.B.A.A2.4A$44.15B41.A2.A.5A.3A3.A$46.8B2.4B40.2A.A.B.B2.A3.A$

46.6B5.4B42.4AB2A2.2A2.A$45.9B4.4B38.3A3.A.A4.A.2A$32.2A4B6.4B4.2A5.

4B37.A2.2ABA.A.A2.A$33.A.4B4.4B5.A7.4B28.A9.BA2.A.2A.A.A$31.A4.4B2.4B

7.3A5.4B27.3A8.BA.A4.A.A.2A$31.5A.8B5.3A2.A6.4B29.A3.4B2A.A.2A.A.A2.A

$36.A.7B5.A2.A9.4B27.2A2.5BA2.A.A.A3.2A$33.3AB2.7B.BA.A2.2A9.4B26.9B

2.2A.A$32.A.2B2.8B.B2A15.4B27.7B5.A$32.4A12B18.4B25.9B4.A.A$30.2A2.BA

3B2A7B19.4B24.10B4.2A$29.A2.3A4B2A7B20.4B21.11B$29.2A.A.B.12B21.4B20.

11B$32.A3.B4.8B21.4B17.B2.10B$32.2A7.9B21.4B15.2A13B$42.3B2.4B21.4B

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6.5B31.4B10.A$62.4B14.4B26.2A5.4B5.5A$63.4B12.5B.BA24.A5.5B3.A$24.2A

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7.4B10.A4.A26.7B2A4B3A2.A$23.6B6.2ABA2.4A.A10.A11.4B7.A.A3.2A26.12B.B

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12.4B9.4A24.9B7.2A$22.13B5.A.A2B.A7.3B15.4B7.A3.A23.4B2.3B$21.15B5.A

2B.2A7.4B15.4B6.2A25.4B3.5B$21.15B4.3B10.5B8.2A6.4B2.5B24.4B7.2A$20.

17B.B.2B11.6B8.A7.8B25.4B8.A$20.29B2.8B8.A.AB5.8B23.4B10.3A$19.13B2A

11BD14B8.2AB.3B2.8B21.4B13.A$18.14B2A9B3D13B11.16B19.4B$17.2AB3.20BDB

D4B.7B12.18B16.4B$16.A2.A4.19BD15B12.17B15.4B$15.A.2A5.6B3.B2.2B2.19B

11.16B.B2A12.4B$15.A7.6B14.17B8.17B2.BA.A10.4B$14.2A6.9B14.15B.2B2.

20B5.A9.4B$21.4B4.2A15.22BD15B6.2A7.4B$20.4B5.A16.8B.13BDBD4B.7B15.4B

$19.3CB7.3A11.8B3.2B2A9B3D4B2.6B14.4B$21.C10.A11.2A3.B5.2B2A11BD4B3.

6B12.4B$20.C24.A10.18B6.4B11.4B$42.3A4.A7.B.3B.4B5.B6.B2A2B3.2A5.4B$

42.A6.3A10.4B14.2A.B2A2.A4.4B$52.A8.4B18.BA.2A4.4B$51.2A7.4B22.A4.4B$

51.5B3.4B23.A3.4B$53.3B2.4B22.2A3.4B$43.2A7.9B19.2A.A4.4B$43.A3.B4.8B

20.A.2A3.4B$40.2A.A.B.12B27.4B$40.A2.3A4B2A7B26.4B$41.2A2.BA3B2A7B25.

4B$43.4A12B24.4B$43.A.2B2.8B.B2A21.4B$44.3AB2.7B.BA.A19.4B$47.A3.5B5.

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10.4B10.A6.4B$56.4B7.3A5.4B$57.4B5.A7.4B$58.4B4.2A5.4B$59.9B4.4B$60.

6B5.4B$60.8B2.4B$58.15B$58.14B$58.13B$56.2AB.10B$55.A.AB3.B2A4B$55.A

6.B2A3B$54.2A6.5B$62.4B$61.5B.BA$63.B2ABA.A$62.BABABA.A$60.A2.A.A.A.A

.2A$60.4A.2A2.A2.A$64.A4.2A$62.A.A$62.2A!

However, as you can see, it's easy to end up with geometry problems when you swap out H-to-2Gs. Anyone who might be tempted to try optimizing the above, please be warned: these gliders are in the most annoying possible category group, Oo1/Ee1/Oe3/Eo3.

That means that if you try rotating the 2G-to-5c/9 by 90 degrees clockwise while leaving the input Herschel in the same orientation, you need a different type of H-to-2G to make the connection -- Oo1, then Ee1, then Oe3, then back to Eo3 again of course.

And if you mirror-reflect the Herschel input, you change the rating also -- Eo3 to Ee1, with the same rating rotation but in the opposite order.

If you run the classifier script on the gliders in question --

`x = 20, y = 5, rule = B3/S23`

18b2o$17b2o$b2o16bo$obo$2bo!

-- it will report "Eo3", because it assumes the first glider it encounters (reading top down and then left to right) will be the glider heading northwest in the reference collection. In this case the glider heading southwest is a little above the other one, so you have to use the second, alternate classification that the script reports.

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I think that what all this means is that the GPAT desperately needs a more intuitive rating system. Either that, or possibly it would work to include a whole lot more pre-built configurations in the reference collection, including the reflecting Snarks. That would make it easier to pick out the right H-to-2G mechanism for a given pair of gliders.

-- Anyone have any clever ideas for a cleaner classification system, or are we stuck with this one?