Sliding down items from a 4th floor apartment - GIF

[meyer77]

About 40 years ago my brother bought two, two family houses next to each other. The plan was to live in one rent the other two apartments, moving to the newly done one then repeating the process.
When the first house was done, it was time to move into the second house.
Since I was the younger brother I was asked to help move.
Since both houses were three stories, carrying boxes down three flights, then up three flights seemed like a lot of unnecessary work.
I came up with a plan to string a clothesline type of pulley between the two houses.
Thinking back we should have first tried it with something that was expendable, in stead the first thing across was a mantle clock, our first and only casualty!