Discover how multivariate models use multiple variables for investment forecasting, risk analysis, and decision-making in finance. Ideal for portfolio management.

Mahatma Gandhi once offered a talisman for anyone in doubt about a decision: Recall the face of the poorest and weakest person you have seen, and ask whether what you are about to do will help them.

On shelves at a Humanetics facility in Huron, Ohio, skulls stare from their eyeless sockets, shiny and silver. Around a corner, a rack is filled with squishy, peach-toned arms, legs, torsos and butts.