However, 46 is still a much bigger number than 3 or 5. So, were Steve Krug, Jakob Nielsen, and numerous others wrong? Their claims are based on simple journeys, usually from around 2000, when websites were less complex. Back then, websites were only viewed on desktop computers. Nowadays, there is a wide range of devices from tiny smartphones, phablets, tablets, laptops to 40 inch+ 4K smart TVs.
When you run lab tests, the number of users is limited by your budget and time. In my experience, it's almost impossible to run more than five lab tests a day, with the same team, and the same lab, even five is a stretch. I usually aim for two in the first day, as a pilot. Then, three or four on the next days, depending on ...
