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# Why can't I post a solution ?

The problem only shows No Solutions...It doesn't say "Add a solution" as it did before..Have the solution writing rules changed ? If they are then I am unaware of the same. Brilliant Staff is requested to look up this issue.

Note by Nishant Sharma
2 years, 8 months ago

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@Calvin Lin , @Suyeon Khim , @Peter Taylor , @Silas Hundt please help. · 2 years, 8 months ago

Nishant, If you answered the problem wrongly, you will not be able to submit a solution. Given your screenshot, this would apply in this scenario. The rules have not changed. Staff · 2 years, 8 months ago

Eh, I'm not too happy about this rule, because there have been times when I've blown the problem, and yet I've wanted to comment on it. As one example, this problem Summing Conditional Products, which I had to figure out that the answer was true, which was based on Stirling Numbers of the Second Kind, so that I could give it my blessing acting as a moderator. Ah, well, Brilliant has its reasons. · 2 years, 8 months ago

We decided against allowing posting of solution when you get a problem wrong, because the significant majority of the use case is that someone who got the problem wrong (esp when the problem is new) would simply make a post saying "the correct answer should be X", and they might include a wrong argument/solution. This would make the experience significantly worse for the community.

Having said that, I am open to having a "discussion board" on problems, which would act as a place to collect such comments before (and after) a proper solution is posted. I will look into this feature when we have time for it.

I agree that there are special cases where even though a person gets the answer wrong, they might still eventually figure out the answer. I think that the best approach would be for them to post as a comment on another solution, or on the discussion board. Staff · 2 years, 8 months ago

Of course, the problem with having such a discussion board is that the answer to the problem could leak out. Like just right now, I mentioned "Stirling Numbers of the 2nd Kind"--did I just give away the secret? I'm aware that trying to design and tinker with the Brilliant website involves all kinds of competing considerations. · 2 years, 8 months ago

Exactly. I agree with you and it was this what I meant. I mean I should be given access to posting solution if I couldn't answer a question correctly in 3 attempts. · 2 years, 8 months ago