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> The Soviets built a plane that flew on hydrogen, but it only completed 100 flights. And only part of those were with hydrogen, the rest were with natural gas: https://en.wikipedia.org/wiki/Tupolev_Tu-155

So you admit this has been done since the 1980s? You seriously don't think we can improve on 33 year old technology?

How dishonest are you going to get before you will admit you were wrong?

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It was done for a very short duration during the 1980s as a technology demonstrator. A prototype, not an actually commercially viable product. Yes, we can improve on a 33 year old technology, but it's not something we can just buy off the shelf. GE thinks it'll take until 2045 to make turbines that run off of 100% hydrogen.

> How dishonest are you going to get before you will admit you were wrong?

When you show me where I can buy a gas turbine that runs off of hydrogen. Not a gas turbine that runs mostly off of natural gas with a little bit of hydrogen mixed in. Not a press release of a company saying "we have experience with hydrogen turbines". If you're going to say that hydrogen gas turbines are off-the-shelf then show me the shelf off of which I can buy it.

Are you familiar with the term "moving the goalposts"?

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