Scientists don't let emotions rule
their thinking, instead what do they
do?

They may design and perform an experiment to try to answer their question and test their hypothesis. From the results of their experiment, scientists draw conclusions.

Thats the way scientists think.

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]