Philosophy is not Science. Most philosophers are not scientists by inclination or training. Some may have studied science subjects at school or university; others may have backgrounds in the liberal arts or mathematics, or they may have just drifted into philosophical studies and later became totally absorbed in it. It was not always thus. In earlier times there were those who called themselves natural-philosophers because their primary interest was in the study of natural phenomena: physics, chemistry, botany, anatomy, whereas others were content to be grouped with theologians, or with students of language, the law, the classics or were clerks or politicians in their daily life.
If Philosophy claims the same status as a Science, it is bad philosophy. It then confuses the diner with the dinner. To stretch this analogy: one may select a menu fix but one does not eat the menu, only the dishes described on the menu.
Philosophers change the world when they prescribe how we should describe it. Thus, they both prescribe and proscribe – habits learned during the long period when philosophers served at the court of princes and popes. They in effect then say to us that we – the non-philosophers – have described the world incorrectly so far and that we should re-describe it according to principles that they have laid out for us. This wanton act authorizes and legitimatizes certain methods, i.e. preferred ways and means of conceptualizing our world. We are being told, often very politely, that we have so far incorrectly described our experiences, and that our descriptions may be replete with unwarranted assumptions. If this is true, who do we blame, but our previous teachers?
Fortunately philosophers tend to disagree more among each other than with those of us on the outside: this saves us all from inevitable perdition.