Being the only child is a unique position in a family. Without any siblings to compete with, the only child monopolizes his parents' attention and resources, not just for a short period of time like a firstborn, but forever.
Like gravity and plate tectonics, evolution is a scientific theory. In science, a theory is the most logical explanation for how a natural phenomenon works. It is well tested and supported by abundant evidence. It means quite the opposite from our informal use of the word theory, which implies an untested opinion or guess. As a scientific theory, evolution enables scientists to make predictions and drives investigations that lead to new kinds of observable evidence.
A typical view of a scientist is that of a person in a white coat, conducting experiments. The truth is that a scientists can be defined as a person who is involved in the systematic and documented study of the phenomena that occur in nature but are not limited to just physics, chemistry or biology.he truth is that a scientists can be defined as a person who is involved in the systematic and documented study of the phenomena that occur in nature but are not limited to just physics, chemistry or biology.