Comment by zaphar

The problem with the phrase is the inclusion of a presumed technology choice. My topical approach is to dig into the details of their approach to the problem. This gives there other person a chance to be the expert.

It also gives me enough information to determine if the knowledge gap lies with me or them, in a fashion that makes it clear I am interested in their point of view specifically. I don't think you can reword the single phrase in a way that won't sound offensive in certain contexts.