What does the letter J mean?
The tenth letter, J adds 1 and 0 to land on 1, in the company of A and S. The zero hidden behind it changes the tone, though: A opens the series, J reopens it after a complete first round, with experience in hand.
It is a 1 that already knows what it wants to avoid. Since it is a consonant, it acts in realization, in other words the way you go about things; its plane is the mental one, that of ideas, analysis, and decision.
The letter itself is a youngster who arrived late in the alphabet: long confused with I, J only won its identity during the Renaissance. It drops below the writing line like a fishhook or an outstretched cane, and is pronounced in a short, crisp, hushed breath. This story of separation, an I gaining its independence, sums up the 1 well: something that detaches from a whole to go its own way.