Engines aren&#x27;t just &quot;correct&quot; or &quot;incorrect&quot;, they perform differently. Users switched to Chrome from IE because Chrome was well marketed on a website they already used (google) and was way, way faster than IE. Many also switched on OS X because it was a bit faster, more feature-full, and marketed&#x2F;perceived as way faster. It wasn&#x27;t because they loved the Chrome UI.<p>I still regularly have to help &quot;common people&quot; find everything but the new-tab button in Chrome (and every browser).<p>Finally, it&#x27;s clear that UI&#x2F;UX designers always say they&#x27;re making software &quot;more intuitive&quot; and &quot;a joy to use&quot; but no one (except grumpy engineers like me...) know what to click or where stuff is hidden anyway. It&#x27;s all just UI churn, around in circles. Show feature prominently because users don&#x27;t know how to find it, then hide it because the UI is too cluttered. Repeat.<p>EDIT: and all that&#x27;s not the main point, sorry ... anyway, the &quot;mass market&quot; or &quot;common&quot; user&#x27;s ignorance doesn&#x27;t change the importance of the engine to the &quot;open web&quot;. And don&#x27;t forget how Firefox started, with only particularly savvy users caring to install it.