Normally when I describe RWD to a non-web person (and bear in mind this might be a non-technical manager or a client), I'll say something like:
The site will be designed in such a way that it will display well on mobiles and tablets and other handheld devices with smaller screens as well as on laptops and desktops with larger screens
I often see the hesitation in their eyes as if to say
What is this guy on about? I'm not an idiot. It should do all that anyway! Is he just trying to take longer / bill me for more hours / charge more for a project and conjuring up some jargon to excuse himself?
What is a better way to describe a design-approach which sounds (to a layperson) like it ought to be completely unnecessary in the first place.
Would it be better to say:
I'll design the site responsively - that means you'll get two sites in one, a mobile site as well as a desktop site.
Is there a definitive way to describe Responsive Web Design to a layperson so the benefits are self-evident and it doesn't sound like something suspicious is going on?