What Bauman means by liquid
Bauman borrows an image from physics to talk about people. A solid is what keeps its shape: a wooden table stays a wooden table year after year, even if it moves to another spot. A liquid is what flows and takes the shape of its container: pour water into a glass and it becomes the glass; pour it into a bottle and it becomes the bottle. Bauman uses this image to describe what has happened to marriage, jobs, friendship, and neighborhoods in the contemporary world: they stopped having a fixed form and began adapting to the context of the moment, changing shape as the situation demands.
In a solid society, commitment came built in: a person took a job expecting to retire from the same company, married expecting never to marry again, moved to a street and stayed there for decades. That wasn't necessarily good, since some people were stuck in unhappy marriages and dead-end jobs just because there was no easy way out. But it gave a sense of firm ground that has become rarer today.
In the liquid version, every bond comes with a built-in exit clause. A person accepts the job knowing they could be laid off next month, enters the relationship knowing either of them can leave whenever they want, and that constant possibility of undoing the ties changes how we commit from the very start.
