Why Adsense and Analytics are inaccurate and differ from each other?

I've came across this

http://techpp.com/2009/08/19/google-adsense-analytics-integration-fail-numbers-dont-match

when doing research for previous post. Interesting.

The main question is "Why Adsense and Analytics are inaccurate and differ from each other?"

Actually the reason (for me) is simple. Humans are not perfect so as their programming. Even if the programming is perfect, many things can happen.

The users might managed to 'send' information to and load ads from Google Adsense but did not manage to 'exchanging data' between analytics coz he clicked the stop button (I did this quite often some time ago because Google Analytics made my firefox to run slow). Many things can happen in this life.

Besides, some firefox users block Adsense ads using "Adblock Plus" add-on. So there will be 'false' inaccuracy too.

Although I do not integrate my Adsense with Analytics, I am not going to get shock if the information is different from each other. Besides, my Adsense, Statcounter and webalizer (own web server log analysis program integrated with my hosting package) show different analysis from each other but not very different. So it is a normal thing.

Besides, read the TOS :

Adsense TOS : https://www.google.com/adsense/localized-terms

8. No Guarantee. Google makes no guarantee regarding the level of impressions of Ads or clicks on any Ad or Referral Button, the timing of delivery of such impressions and/or clicks, the completion of Referral Events, or the amount of any payment to be made to You under this Agreement. ...

Analytics TOS : http://www.google.com/analytics/tos.html

10. DISCLAIMER OF WARRANTIES . The information and services included in or available through the Service, including the Reports, may include inaccuracies or typographical errors...

And for the main question why after 10 months still different result... hurm, as someone who knows a little bit about internet pogramming, all I can say it, it is easy to ask to do this and that, it is easy to imagine and to complaint, but doing the programming and turn it into a reality is a mind blowing process.

Besides, Mr Google tells us clearly on both Adsense and Analytics TOS that inaccuracy may occur. So accept it. If you don't like it, you must like it because you have agreed to the TOS when you signed up for the service. Remember? Lolz.

Last but not least

The graph clearly shows that as per Adsense, the earnings are close to 11.8 units, while, as per Analytics, it drops to 6.7 units.

As long as the earnings in Adsense is higher than Analytics, isn't it is a good thing? If Analytics is higher than Adsense, then that's an issue. XD