Woolly brain fog

It was quite humid last week, which was very unusual for this part of the country. We might have a day or two, but never a week's worth of high humidity all at once. Perhaps, that was why I kept casting on the same scarf two...three times with two different yarns and it never worked out. I would finish a skein and realize I was only a third of the way through. Then I went to our yarn shop's special Third Thursday of the Month sale--tweed yarns @ 40% off this month--and got a hank of pretty blue flecked tweed from Australia. Well over the 200 yards I needed. So it finally rained and the humidity went away and I read the pattern again. Yes, you guessed it! I needed 2...TWO...hanks or skeins of 200 yards each. DUH! The dilemma is now do I go back and buy another pricey skein of Australian wool for full price? Well, it would be a 20% over all discount. Maybe I'll find another nice scarf pattern. Sigh!