The reason is that the algorithm uses a random walk with local steps.

See also random walk for more general treatment of this topic.

A simple random walk on will cross every point an infinite number of times.

For the simple random walk, each of these walks are equally likely.

In the short term, investing is really just a random walk.

Once upon a time I took a random walk across a field.

He moved with the random walk which made only those sounds natural to the desert.

But the random walk is a hard system to follow, human instincts and claims to insights about the future being what they are.

It's partly the random walk of life - you don't pick your neighbors.

Share prices follow a random walk without any underlying trend.