The picked up cards are returned in a
original position of a chronological order. This becomes hard if I
pick up a lot of card at once. If it is too hard, I hesitate to
pick up cards from the dock.
An easiest way to overcome this problem is to mark the positions of
picked up cards. If I use post-it, however, I have to mark, say 30,
every time.
I invent a a trick to use indexcard itself as position marker
(picture above). When I pick up a card, raise a card just behind.
The right-hand side is exposed to know the date stamp of raised
card. When return the picked up cards, see the compare the
timestamps, and return. This trick reduces effort to find a certain
time from the sequence of card in the dock.
If this process is fun enough, it increase a chance to review cards
in the dock. 