102
Why don't railroads need expansion joints?
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this post was submitted on 01 Jan 2025
102 points (94.0% liked)
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TLDW: skipped through until 25:47: the rail doesnt lengthen it just extends to the tops and sides.
This could have been a 5 minute video. All that “Whooa”-Shots and leadup was not needed but is the American way of storytelling: Very talkative and getting amazed by every detail.
It's a shit title because the video us actually about metallurgy and thermite welding, not track expansion and contraction.
I'm subscribed, when the video came out something along those lines was the title. They likely changed it because it performed better with viewers.
He has a video from a while back where he gets into how he does A/B testing with titles and thumbnails. TL;DR click bait titles and thumbnails work.
it's a good hook because I always thought they were supposed to have gaps