A river does not travel in a straight path before reaching the ocean.

A lightening bolt does not follow  a straight path before striking the ground.

Planets does not move in a straight path before completing their journey around the Sun.

Most things in nature are not perfectly straight. The horizon is not a straight line at all! Even our DNA strand is not arranged in a straight line.

Straight means inflexible or rigid.
Nature favours flexibility. Nature
sustains itself by adopting flexible measures.

Human life, which has sprung  from nature, also favours flexibility. Flexibility offers a person to come out with multiple options to a problem and devise alternate strategies.

A keen observation of nature reveals this beautiful nature of nature!

Be flexible!