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From our Expert Voices conversation on pro football.

The difficult part of this question is what is meant by "safe." Does safe mean that no players ever get concussions or that, say, fewer than 15% get concussed? Would soccer or hockey meet such a stringent standard?

We should face the fact that a significant part of football's appeal is the violence that's inherent to the game. Why else would one out of six Americans want to watch a 40-year-old boxer punch a 29-year-old MMA fighter? If violence were not important then the NFL could convert to two-hand touch football and suffer no loss in popularity.

Bottom line: The question is how much concussing is acceptable? It seems that this question is best answered by the NFL Players Association, with the understanding that the more dangerous it is to play football, the greater the compensation and the greater the health benefits must be. That is, there is a marketplace negotiation in which the players receive recompense (or battle pay) for the physical risks that they assume.

Read the other voices in the conversation:

Go deeper

Updated 19 seconds ago - Politics & Policy

Senate action on stimulus bill continues as Dems reach deal on jobless aid

Photo: Alex Wong/Getty Images

Democratic leaders struck and agreement with Sen. Joe Manchin (D-W.V.) over emergency unemployment insurance late Friday, clearing the way for Senate action on the $1.9 trillion stimulus package to resume after an hour-long delay.

The state of play: The Senate will now work through votes on a series of amendments that are expected to last overnight into early Saturday morning.

Capitol review panel recommends more police, mobile fencing

Photo: Olivier Douliery/AFP via Getty Images

A panel appointed by Congress to review security measures at the Capitol is recommending several changes, including mobile fencing and a bigger Capitol police force, to safeguard the area after a riotous mob breached the building on Jan. 6.

Why it matters: Law enforcement officials have warned there could be new plots to attack the area and target lawmakers, including during a speech President Biden is expected to give to a joint session of Congress.

Financial fallout from the Texas deep freeze

Illustration: Annelise Capossela/Axios

Texas has thawed out after an Arctic freeze last month threw the state into a power crisis. But the financial turmoil from power grid shock is just starting to take shape.

Why it matters: In total, electricity companies are billions of dollars short on the post-storm payments they now owe to the state's grid operator. There's no clear path for how they will pay — something being watched closely across the country as extreme weather events become more common.