Reread it.
Good introduction to systems thinking at an informal level. No mathematics, but useful as a primer for bullshit detection for those who aren't going to model systems but want to see why many "solutions" to problems won't work because systems aren't as simple as (for example) politicians make out.

Although only one technique is introduced - stocks and flows - the book shows it's applicability across multiple domains like ecology, economics and many others. Then mostly focuses on how various traps caused by over-simple thinking can be recognized and some ways out.
There are examples (again, informal)
An optimistic book that shows ways we can do better in social policy but unintentionally pessimistic because examples from 1990s still haunting us.

One star removed because there are some significant errors. For example, although Meadows talks about several natural systems (e.g. ecology), she says "every system has a purpose", yet fails to explain what the purpose of an ecosystem might be. Or that even human systems might simply have evolved without a specific purpose or that the purposes of the various people involved might differ or even contradict each other.