Before getting there, we still had to free climb the notorious Glowering Spot above Camp Five.

在到达那里之前，我们仍然必须自由攀登知名第五营上面的Glowering Spot。

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And, unless you're Spider-Man (or Lynn Hill, the first person to free climb El Cap), you have to resort to aid to ascend it.

WSJ: Training for the Big Wall | By Michael J. Ybarra

It is currently free to climb the 334 steps of the clock tower containing Big Ben.

BBC: U-turn over Big Ben trip charges

Far from a zero-sum game, where the successes of some come at the expense of others, free economies climb spirals of mutual gain and learning.

FORBES: The Wonders of Wealth, the Path Out of Poverty