Years ago, I worked with a product development team that was testing a printer prototype. We brought it into people’s homes, and I observed as they hooked it up to their computers. I remember vividly an older woman who was excited to print photos of her grandchildren at home. But as we watched her grudgingly climb under a table on her hands and knees and struggle to plug in the device, it became clear that, despite all its innovative features, this printer really wasn’t designed for her. The product designers and marketers who had all worked closely on this product loved it, but the consumer experience missed the mark.