Cast you mind back to Hawking's bestselling A Brief History of Time - his Old Testament, if you will.
You cast back over Mayall's previous television personas, plural in number if not in effect, in A Kick Up The Eighties, The Young Ones, and Filthy, Rich and Catflap.
Not much high vegetation grows on the bar, so if you face east you can back cast as far as you like without snagging a tree, and fish the smaller pond with ease.
But if you cast your mind back to memories you've tried to erase, you may well recall being prescribed them for that awkward itch in that awkward place, which thankfully cleared up and disappeared shortly after.
If you cast your mind back to 2007, you will probably recall the feeling of hope and opportunity.
If you cast your mind back to October, you may recall talk of Acer's Liquid Metal handset hitting the FCC.
And that's before you start casting back through bits of the Iliad, most of Hamlet and all of Burton's Anatomy of Melancholy.
Begin with your fly line in front of you and cast it back.
If you cast your mind back to the Pearl Flip you'll recall that the Canadians once, a long time ago, tried to turn the BB into a more friendly-looking phone.
But if you cast your memory back a little farther, you might have had a sense today that Sharapova's long-running return to form hasn't yet peaked.
