Could Modern Humans Survive 2.5 Million Years Ago?

Life Noggin asked and answered the question, "Could you survive 2.5 million years ago?" That would put a modern human in the Pleistocene epoch when the world was colder, diseases were different, and early hominids roamed the Earth. Although there's no definitive way of knowing how a modern person would fare, the challenges of the time period and lack of modern technology would make survival rather difficult at the very least.