It is also difficult to prove because a web browser, yes even Safari, is an open platform by design and it can can run 99% of the web successfully just like oth

It is also difficult to prove because a web browser, yes even Safari, is an open platform by design and it can can run 99% of the web successfully just like other browser. Yes that is true even for Safari. People like to call Safari the “new IE” but in reality today’s web works equally well in all major browsers including Safari. (Wait for someone to comment that that feature XYZ does not work on Safari and therefor it sucks - yes but that is the nature of the web and browsers. Every Single Browser out there has something missing or added. That has not prevented anyone from building great websites that work in all of them. )