Live and learn

Today's lessons:

Snow is wet.
Wet glasses are slippery.
Sledding down a bumpy hill imparts fairly severe jolts to aforementioned glasses.
Glasses coming off in mid-slope is somewhat distracting.
And a distraction while going downhill very rapidly, on an unsteerable sled, while suddenly finding oneself unable to see, is somewhat...painful.

Are we feeling enlightened yet?