Mod Dylan's response:
As this quest is only played through once per account (unlike the treasure trail puzzles), it was considered unnecessary to randomise it to give it variation, as this would have added significant development and QA time without much noticeable benefit.
Another problem with randomising is we would not be able to guarantee two players approaching the puzzle would have that same difficulty of problem to solve.
Well there you have it. It'll take time to get people to stop bragging about solving puzzles quickly (with the help of a guide). It's much harder to randomize a puzzle with a turn limit - like this one - without creating unsolvable positions; for something like the 9-square slider in Nomad's Requiem, though, I would like to see it scrambled by having the computer execute a set number of moves randomly. A reverse scramble can't create an unsolvable position and it ensures a generally equal set of difficulty the more moves the computer makes.
I understand the prioritizing that's going on - designing the puzzle as the main element of a small low level quest and taking out weeks of QA - but I'm hoping that when a true Grandmaster quest rolls around, the puzzle is created from the beginning
with the purpose of randomization. If you think about it, there are really three ways of completing a quest:
1. Getting out a guide and following it through step by step.
2. Looking at general tips, required items (so you don't have to run around while doing the quest), and then figure out how to complete each step on your own. In the case of a puzzle, you get help understanding the concept of the puzzle but do the solving on your own.
3. You do not look at anything and just play through the quest by yourself.
Jagex cannot stop people from using the second method, but they can
increase the prestige of the quest cape by making sure that you can't use a "Puzzles for Dummies" guide. I have a couple friends who still had no idea how the puzzle worked after the quest was over, as all they did was watch a video and mimicked what the other character did. For a small-scale quest like EW3 that's okay, but not when designing bigger puzzles.
I actually had to look up Within the Light to remember the puzzle. I'm assuming it's the one where you redirect light to the appropriate wall? I barely remember doing that one - I guess I got lucky, but I just remember taking each pillar one step at a time and rotating it in the right direction. It's not really a puzzle when every plausible solution works.