A child who falls from a height of 7.2 inches strikes the floor with one-fifth the energy as the same child falling from a height of 36 inches. Every time we reduce by half the height from which the child falls, we reduce the energy of impact—the force transmitted to the child’s body—by a corresponding fraction.

And we needn't stop there. An even better way to reduce such injuries would be to carry this fundamental physical principle to its logical conclusion. Simply put, the way to maximally protect children from injuries associated with falling from a high chair is simply to do away with the chair entirely and put children on the floor. By definition, children who are already sitting on the floor cannot fall down to it. They may topple over, but they cannot fall onto a floor on which they are already sitting.

Of course, such a proposal will naturally attract its share of detractors. For one thing, sales of high chairs would naturally fall, and this could negatively impact the global baby-care market, which is otherwise expected to amount to $67 billion per year by 2017. The ripple effect could be substantial, costing jobs in the manufacturing, distribution, and sales segments of the baby sector. But the safety of our children is worth some economic pain.

Another group that might resist this proposal are parents, who would be forced to stoop or even sit on the floor to handle such routine baby care tasks as feeding. Lower-back pain is one of the most common complaints in medicine, and is estimated to cost the nation over $100 billion per year in direct medical costs and lost productivity. The low chair would undoubtedly drive these up, but the resultant increase in health sector employment might compensate somewhat for lost high chair manufacturing jobs.

A final source of dissatisfaction might be infants and toddlers themselves. While most will be unable to articulate their displeasure, there are definite drawbacks to spending more time on the floor. For one thing, it is more difficult to see what is going on. It is also more difficult to engage the gaze of adults when children are positioned far below their eye level. And being on the floor increases the risk of being stepped or fallen on, which might offset some of the reduction in high chair fall-related injuries.

On balance, however, the case seems compelling. By cutting the height of high chairs, we would reduce the severity of injuries. Optimally, we would place children on the floor. If this is not possible or desirable, we need to begin manufacturing lower chairs. To answer the marketing department’s criticism that the term “low chair” has little zing to it, we can simply introduce consumer-oriented terminology, such as the “floor-hugging chair” or “gravity-friendly chair.”