Firstly, Safari caches my page loads in History under the first url, so when I look back for 'that page I found', it isn't there, just junkie google urls.
Secondly, if I refine and refine a query until I eventually find something useful, that final, useful query isn't stored in my history, because its all one pageload - so I have to fiddle around again next time to try and find that result. grrr...
Yep, more searches mean we are 'exploring', Google. You go right on beleiving that!