Hypothetical: You had just inherited a substantial sum in fiat currency, say AUD$2,500,000, from a distant (and unexpectedly generous) relative. The estate lawyers has finalized all the paperwork & formalities, the wire transfer has gone through, this sum is now held in an trust account in your name. As you gleefully exit the building, you slip and hit your head hard on the masonry steps. Lights out. After hours of heroic medical care, you condition stabilizes, but you're in a coma that will last exactly one decade (10 years). Your mental functions are unimpaired, and you will make a full recovery once you awake. In the first week of your 'lost decade', you are able to communicate one financial directive to your trustees (who will faithfully execute it), what would you ask them to do with your wealth? Assume the directive can be only be 140 characters long, so be succinct.
Index funds. You have to play the percentages, and on average the share market returns the highest percentage.