I don’t understand why they didn’t test the old one in the usability labs BEFORE deciding to use it: "From data in our usability labs, we’ve consistently seen

I don’t understand why they didn’t test the old one in the usability labs BEFORE deciding to use it: "From data in our usability labs, we’ve consistently seen people misunderstanding or looking past the icon in the user interface, especially when a label didn’t accompany it. When it stood alone, many people saw its circular shape and mistakenly interpreted it against other ring-shaped icons like sync or refresh or loading"