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Comment by bernulli | Hacker News Reader

Why would the hydrogen not escape?

Diatomic hydrogen is bigger than helium, less prone to diffusing through a membrane.

Leading to an increasing percentage of hydrogen that will exceed the danger threshold. Helium level will need to be monitored and replenished.

You have to monitor and replenish no matter what.

That's part of why the comment said "a percentage" you don't have to refill.

Have you worked with hydrogen? Being less prone to leaving than He is an extremely low bar and very far away from the claim that it doesn’t ever diffuse through anything.

Diffusion works both ways, too. Oxygen outside of the membrane will also slowly diffuse into the hydrogen and helium mix, further complicating any attmpts to remain non-combustible.

Sure. And none of this prevents hydrogen from escaping.

That’s true, but it isn’t a claim I made.

No, but the post I replied to, and apparently you felt the urge to reply to my comment. But I now understand that you did not intend to contribute to the discussion, thanks for the clarification!

The comment you replied to was mine though…

I didn’t realize you were daniel-cussen - but it looks like you’re merely overwhelmed by how a forum works. That’s fine, but maybe dial down the smugness.

Click on your comment:

https://news.ycombinator.com/item?id=29096388

Then click parent. Go ahead, I’ll wait.

Smugness indeed.

One day you'll understand how a thread works! Don't give up hope!

I’m guessing you didn’t click like I suggested.

That's true, I hope you're not waiting anymore.

If you want to understand this thread, I suggest you start at the start.

Hint 1: I gave you the name of the person I answered to.

Hint 2: No matter how often you repeat it, it wasn't you.

Hint 3: Maybe it helps if you draw a flow chart of the different statements in the conversation!

But, see, don't worry. Because you jumped into a conversation between the post I replied to and myself, I assumed you had to add something to that conversation. I realize that I was mistaken and you just swooped in to offload some unrelated fun fact. My bad, won't happen again!

The comment you replied to was mine. It was this one: https://news.ycombinator.com/item?id=29094670

Yes, there was a higher level comment from someone else. But it wasn’t the one you replied to.

What can I say. Maybe drawing that flow chart really would be helpful for you. It's a valuable skill, being able to follow a thread or a conversation, and trying to understand the back and forth between statements and arguments may come in handy some other time.

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