My experience of Wikipedia

I have found that Wikipedia is a wonderland for ultra-pedantic editors who are quick to criticise, but slow to add useful information. My experiences can be summarised as follows:

• The human hand has four fingers and a thumb. ^{[citation needed]}

• 2 + 2 = 4 ^{[clarification needed]}

• The general expection ^{[by whom?]} is that most people will die before they are 100 years old.