ml242 wrote
what's the s1?
The "s-1" rule is written for bikes but applies equally to skis for many of us:
The Velomanati wrote
Rule #12; The correct number of bikes to own is n+1.
While the minimum number of bikes one should own is three, the correct number is n+1, where n is the number of bikes currently owned. This equation may also be re-written as s-1, where s is the number of bikes owned that would result in separation from your partner.
Rules # 5 and 9 are worth keeping in mind as well:
http://www.velominati.com/the-rules/