the + symbol and the x symbol are assigned to the same symbol group. both are old ideograms appearing in most cultures. both can mean the number 10 (X is ten in latin). i really like how symbols.com explains the different hobo signs: in the French hobo system [+] means here they give nothing & X means this apartment/house is a good project for a burglary. [+] vertical line = spirit; horizontal line = material. compare symbols for venus & mars.
the + symbol also represents addition & the crosshairs. the x symbol represents mulitiplication, location of treasure (x marks the spot) & the quincunx. the quincunx is the crossroads.
one Singularity (probably the primary) characteristic is speed. speed reading/learning experts focus on brain dominance.
there are several locations in the human body were nerves cross (or decussate) leading to left-right dominance (eyes, hands, etc). my brother is ambidextrous & (we're medbrats) we were fascinated by a doctor who could operate with both hands. several years ago, near the Bodhi Tree bookstore, i got a tarot reading from a guy sitting in a dark hole in the wall lined with bricks. a big flag of Scotland hung high up on the wall. he shuffled the deck then asked me to pull 22 cards & silently watched me as i pulled them with two hands. when i finished he said, in all the years i've been doing this i have never seen anyone use both hands.
[+] addition accumulates; [x] multiplication does it faster. if both symbols are rotated they become the other symbol. i believe the dynamic movement i'm looking for is [+] ===> [x] ===> [*] (overlay both symbols to create 8-rayed star, another symbol for Venus).