How often should you change sand in a sandbox?
I'm curious to know, as a financial expert in the cryptocurrency world, how you would approach the seemingly unrelated question of "How often should you change sand in a sandbox?" From a metaphorical standpoint, perhaps this relates to the need for periodic updates or refreshes in our investment strategies or portfolios. Is there a set timeframe, like quarterly or annually, that investors should consider reviewing and potentially rebalancing their portfolios? Or is it more intuitive, based on market conditions and individual risk tolerance? I'd appreciate your insights on this unconventional but potentially illustrative question.