People have disparate opinions about garden design. If you take paving stones; you’ll have some people who like a nice, clean placement of well polished, flat stones, and you’ll have others who like stones which are mishmash of shapes and sizes. The latter of these are known styles are known as crazy paving stones.
Crazy paving stones are stones which are a random assortment of shapes and sizes, often times not perfectly flat, and often times they’ll be of varying shades in colour as well. A lot of people prefer this as it is more in keeping with an unkempt look which many people prefer to an over-cultivated garden look.
A good thing about crazy paving besides the design elements is very little work which needs to go into producing them; which will usually translate into a reduced price for consumers.