I understand where you're coming from, but I'd read it as writing code that will behave the way it's anticipated without any gotchas - merely writing code that

I understand where you're coming from, but I'd read it as writing code that will behave the way it's anticipated without any gotchas - merely writing code that works in a specific scenario shouldn't be the goal. Additional benefit would be to write code that easily extendable, but that's not mentioned here.