Presuming that you mean "stairs", these exist and impress Hacker News users who think any problem can be solved with enough overengineering, but nobody really uses them because they're so much worse at everything else. I've used one to board an airplane embarking from the tarmac, that's about all they're good for.
alt Hacker News
Presuming that you mean "stairs", these exist and impress Hacker News users who think any problem can be solved with enough overengineering, but nobody really uses them because they're so much worse at everything else. I've used one to board an airplane embarking from the tarmac, that's about all they're good for.