Older threads on why the agility ladder is useless

Gentlemen I hate to beat a dead horse but can anyone provide the old thread about why the agility ladder is a worthless piece? I tried a search but I couldnt find it in archives. The respective coaches have heard about the site but want to see it on paper instead of taking numerous real track guys word for it. They all know Charlie was the best of the best an want to see his words on paper. Thank you so much!

http://www.charliefrancis.com/community/showthread.php?3476-Ladder-quick-feet-drills

and perhaps this one
http://www.charliefrancis.com/community/showthread.php?4351-Agilty

Where its worth would lie for the respective coaches?

Thanks a million guys!

Try the forum reviews also?

Boldwarrior and No 23 - thank-you. I am in the process of reviewing all the products and it is very helpful to have members contribute as well on this.