Having machines remember for us has indeed affected human memory for a long time. Socrates complained that the introduction of writing would damage readers' memorization ability: <a href="http://neamathisi.com/literacies/chapter-1-literacies-on-a-human-scale/socrates-on-the-forgetfulness-that-comes-with-writing" rel="nofollow">http://neamathisi.com/literacies/chapter-1-literacies-on-a-h...</a>
We used to memorise information, now we memorise search patters and ways to filter and combine sources of information. If anything, it can be exponentially more complex and useful.<p>It's like the difference between carrying a bag on your own back and managing a transport fleet.