"chaining-as-a-language-feature is inherently focused on stringing together a sequence of imperative side effects, where it can be nicer to use expressions for

"chaining-as-a-language-feature is inherently focused on stringing together a sequence of imperative side effects, where it can be nicer to use expressions for their values." Out of interest, what do you mean by "it can be nicer to use expressions for their values"? Any example of that? Cheers!