A discussion of different types of sampling techniques

The reason Piglet had his unfortunate meeting with the Heffalump was that Winnie the Pooh's sampling technique was seriously defective. Pooh and Piglet had agreed to bait the Heffalump trap with honey. Pooh had taken a large jar from the shelf and satisfied himself that the label read HUNNY. He was suspicious that the honey might have been replaced with cheese, so he took a large lick. It tasted like honey, but Pooh was still worried that there might be cheese at the bottom. Eventually he satisfied himself that it was honey, right the way down.