Would the best shape for carrying weight also be the best shape for speed or for stability?

The best shape for carrying weight is typically a broad and low profile, which maximizes stability and weight distribution. However, this shape may not be optimal for speed, as streamlined forms reduce air resistance and enhance movement. Stability often requires a wider base, while speed favors a more aerodynamic design. Therefore, the ideal shape for each purpose—carrying weight, speed, and stability—varies based on the specific requirements of the task.