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expect the unexpected

Be prepared to face unanticipated events or situations. Climbing a mountain has many dangers, so no matter how much you prepare, expect the unexpected.
See also: expect, unexpected

unexpected always happens

Prov. The things you do not foresee will happen to you; when you plan, you cannot think of everything that might happen. It took us an hour to drive to the restaurant, and when we got there, it was closed. I would never have expected a restaurant to be closed on a Friday night, but the unexpected always happens. Especially to me.
References in periodicals archive ?
Avivas Protecting Our Families report shows the reality of the financial fall-out caused by unexpected illness, with a particularly damaging effect on families with young children.
BRITS will fork out thousands in unexpected bills, according to a new study.
Nearly all the best things that came to me in life have been unexpected, unplanned by me"-Carl Sandberg.
The increased mortality risk in children with undetected heart conditions or epilepsy highlights the need for expanded surveillance to identify sudden unexpected death associated with these conditions (3,4).
Unexpected Israel" is without doubt a memorable and wholly unexpected j ourney.
And within minutes of humming it, anyone around in the 80s will vividly remember the silhouetted dancer, twirling and twisting her way through the opening titles of Tales of the Unexpected.
The unexpected gift a too-distracted family gives to an ordinary middle child makes for a lovely picture book saga that is hilarious, thought-provoking and unexpected, all in one.
They decompose the total market volatility into the expected and unexpected components
THURSDAY, JANUARY 10, 2013 January 4-10 CUSTOMS HOUSE, SOUTH SHIELDS Mill Dam (0191 454 1234) The Hobbit: An Unexpected Journey (12A): Fri/Sat/Thu 1.
WARWICK ARTS CENTRE The Hobbit - An Unexpected Journey (12A) / Beasts of the Southern Wild (12A): Fri, Sun-Wed / It Always Rains on Sunday (PG): Wed & Thur SHOWCASE COVENTRY Jack Reacher (12A) / Life of Pi 2D & 3D (PG) / Nativity 2 - Danger in the Manger
BRYNMAWR Market Hall 01495 310576 The Hobbit: An Unexpected Journey (12A) Fri-Sun/Wed/Thu 7pm, Mon 4pm CARDIFF Chapter 029 2030 4400 Amour (12A) Sun 2.
Expect the unexpected this Christmas but don't panic - we've got it covered, from gifts for neighbours who drop by to batteries for the big day Unexpected Guests Best Champagne, Morrisons.