Final answer:
The scientific attitude of having doubt is called skepticism, which emphasizes cautious analysis and critical inquiry without outright denying the possibility of acquiring knowledge.
Step-by-step explanation:
The scientific attitude of having doubt is most accurately described as skepticism. Skepticism is a philosophical attitude of questioning the possibility of certain knowledge. Philosophers and critical thinkers advocate skepticism as a means to engage in deliberate critique and inquiry before reaching conclusions or setting beliefs. This approach promotes cautious analysis and the mindset that every belief should be subject to continuing examination, yet does not necessarily reject the possibility of attaining knowledge. Rather than complete denial of knowledge, this form of skepticism acknowledges our fallibility and the need for evidence and logic in asserting knowledge claims. Skeptical inquiry is considered an essential part of scientific methodology and the pursuit of understanding the natural world.