But the nines one, you memorize a simple formula. Nine minus ( Operand less one ), and for me it's quicker to do that than memorize ten facts. IT's one fact.
I don't think the human brain operates with bits. Synapses are not a transliteration. It builds from that because how could it not, but doesn't operate from them. It's a higher order.
We're not arguing here but its an interesting discussion about how memory works. And maybe it works different for different people. But I actually think numbers are even easier to memorize than the strict comparison of bits accounts for; the comparison of bits was just a way to illustrate it in terms of information content.
Numbers are fundamentally easy to memorize because they can be represented symbolically without the inefficient "translate into English" step. When I remember a number, the verbal parts of my brain arent involved at all. Its more like remembering a picture. Memories that are accessible without effort.
If one has memorized the tables, when the brain is asked "what is 7x9", the retrieval process is the same as when the brain is asked "whats the letter between A and C?" or "What color is between red and yellow in the rainbow?" Retrieve the array, look at the relevant part of the array, print answer. A single effortless step - simply look at the answer.
If one has not memorized the tables, Mist would have us instead retrieve a string of text. This is a
fundamentally harder process. It is asking you "what is the second line in Hamlet's soliloquy?" Yeah, you can retrieve the answer, but it takes more time and effort than retrieving "what is the color between red and yellow in the rainbow?"
THEN after retrieving the answer, one still has to do three mathematical operations: subtract, subtract, concatenate. What a scam! I had to memorize something harder, then after retrieving it I still had to do arithmetic.
That is the discussion, as far as I can see. The old way allowed students to simply look up the answer in their heads. The new way is asking them to perform an operation akin to remembering the second line of Hamlet's soliloquy, then performing three simple operations, to get the same answer.
It just makes no sense to me, replacing something easy with something harder, in order to satisfy some educator's desire to impart this nebulous thing called
understanding when they are unable to assess
understanding in the first place...