In other words, buy low, sell high.
Yes, but when I started working, my 401k funds did not really have an option to 'sell', only to buy. I couldn't easily change my 'buy' distribution or shift assets from one financial instrument to another. With online tools, I now have more control over my retirement fund. I unfortunately did not realize this had changed until it was too late this time around. I wish I had figured this out the last time the stocks crashed.