Final answer:
Bachelors are unmarried males, which is an analytic proposition. Philosophers do not unanimously agree without dissent in all philosophical topics throughout time.
Step-by-step explanation:
A bachelor is defined as an unmarried male. The word 'bachelor' is commonly used to refer specifically to an unmarried man. Therefore, it is certain that bachelors are unmarried. This is an example of an analytic proposition, which is a statement that is true by definition. Analytic propositions are considered to be certain because they are true by virtue of the meanings of the words involved. In contrast, the cogito, which states 'I think, therefore I am,' is a synthetic proposition that is based on personal experience and inference, and therefore may not be as certain as analytic propositions.
Regarding unanimous agreement among philosophers, it is difficult to say that there has been unanimous agreement without dissent on any philosophical topic throughout time. Philosophers often have differing viewpoints and engage in debates and discussions to explore different perspectives. While there may be general consensus on certain topics, there are often differing opinions and ongoing debates within the field of philosophy.