Maybe a computer diagnostic machine that will help you tune your bow. It will have trouble codes like those in your car. Type in the make and model of your bow, draw weight, draw length, arrow size/length type of fletching and broadhead weight. The machine will then draw the bow and shoot it . Here comes the printout. " Nocking point to high, move down 1/16 inch....Adjust bottom tiller 1/4 turn, move arrow rest to left 1/8 inch, Use lighter broadhead 90- 100 grains............................................ ..............................[:-][:-][:-][:-][&o][&o][&o][&o][&o][&o][&o]Yea i must be dreaming.

I think the major changes are going to be in material composition. How about a bow string that you NEVER have to change?