Exam Notes 1 Presocratics* - Presocratics were Greek thinkers who introduced a new way of questioning and inquiring into the world. They all commit to finding an archaea, which is the fundamental thing that underlies all of reality - it means the prinicple of things - and they all, someway or another relates to nature. Prior to Presocratic things, people would rely on Theological explanations (Religion) 2. Thales* - He was the first scientist and philosopher, who believed that "water" was the source of reality - the principle thing that unifies all of existence 3. Parmenides* - Parmenides believes that the universe is unchanging. That the reality remains the same, 'cause otherwise it will violate the LAW OF CONTRADICTION where something cannot be a A and NOT A simultaneously. ;"only our senses convey the appearance of change" 4. Heraclitus* - Heraclitus believes that all there is change in the world, using the example of how one cannot step on the river twice. He thinks that there is perpetual occurance of change, howver that contradicts itself as "a change cannot change"