However, Richard Aboulafia of the Teal Group, an aviation consultancy, thinks there is more technological risk with the Leap-X than with the GTF and greater uncertainty about whether it will deliver the same cost savings.

ECONOMIST: New competition for Airbus and Boeing

Risk is commonly placed on the x-axis, and return is placed on the y-axis.

FORBES: The Efficient Frontier

The event cancellations are likely intended to diminish the risk of future catastrophic injuries during live X Games programming.

FORBES: ESPN Deals Major Blow To Action Sports With X Games Best Trick Cancellations

The vertical axis (Y axis) is the compounded portfolio return and the horizontal axis (X axis) is portfolio risk as measured by the annual standard deviation of return.

FORBES: Basics of Asset Allocation (Part 2 of 2)

So putting aside the terrorist threat, are these X-ray-like machines even a slight health risk?

FORBES: Would You Rather Risk Getting Cancer Or Just Get Your Privates Patted?

And that those who paid the same ticket price, bought the same game or applied for the same job should not have to expect to get harassed and insulted, or quizzed incessantly on their credentials, until any risk that they might have had fun is destroyed, simply because their extra X chromosome makes them instantly a cause for suspicion.

FORBES: #1reasonwhy: Geek Gender Meltdowns Happen Regularly, Still Bad For Business

In fact, while the low-risk patients might not receive any benefit from the test, there is at least some risk from radiation--which is higher for a CT angiogram than a traditional X-ray.

FORBES: Magazine Article