The HTML string is different from the traditional selectors in that it creates the DOM elements representing that HTML string, on the fly, to be (assumedly) inserted into the document later.
The problem that many people have is that they run through life like headless chickens, making important decisions on the fly, often heavily influenced by their environment, and without proper reflection and consideration.
Some of it, I think, eventually is going to be content that's either created on the fly for you or kind of pulled together and synthesized through different things that are out there.
Because their molecules can shift their crosslinks around on the fly, the materials are stretchy, can repair themselves quickly, can dissipate excess energy, and are usually soft.