One of the virtues of transactive memory is that it acts like a fact-check, helping ensure we don’t all descend into selfish solipsism. By sharing and comparing our memories, we can ensure that we still have some facts in common, that we all haven’t disappeared down the private rabbit hole of our own reconsolidations. In this sense, instinctually wanting to Google information – to not entrust trivia to the fallible brain – is a perfectly healthy impulse. (I’ve used Google to correct my errant memories thousands of times.)
I don’t think it’s a sign that technology is rotting our cortex – I think it shows that we’re wise enough to outsource a skill we’re not very good at. Because while the web enables all sorts of other biases – it lets us filter news, for instance, to confirm what we already believe – the use of the web as a vessel of transactive memory is mostly virtuous. We save hard drive space for what matters, while at the same time improving the accuracy of recall.