I'd say the opposite. The fact that a species memory has been created by the written word and the printing press means that nothing ever dies, and initial mistakes and the achievement of local maxima can be preserved forever. The tyranny of Aristotle over the Dark Ages was no joke.

Natural senility as an individual is probably no more than the accumulation of calcified habits, rather than completely biological - the ability to abandon old, wrong knowledge is a sign of youth and indispensable to the learning process. The written word has enabled us to achieve senility as a species.