Do you believe there are untold, unimagined technologies waiting to be invented? Do you believe that the future will be radically different than the present? Then you should be investing, heavily, in the future.
Do you want to be ambushed by the new kid on the block? Do you want to be the overly-confident behemoth who is cut down by the upstart, just as IBM was cut down by Microsoft? Well, then don't invest in the future, just buy lots of your own shares.