More B.S. I've soldered diodes back to back not to get a transistor but to get a bridge rectifier. The diodes were not destroyed. The bridge rectifier worked.
Left and right junctions, since you seem to have problems.
I put "solder" in quotes, because all you can do with a solder gun is destroy both diodes, as you no doubt know. It is taught as a concept, because it is a concept, as are all other things taught to beginning EE's in circuit theory classes.
This is an absurd argument, based on you being as willfully ignorant, and/or pointlessly didactic as you can manage. Find a beginning college level EE theory book and look for yourself. This is a piece of commonplace knowledge to EE's.
More B.S. I've soldered diodes back to back not to get a transistor but to get a bridge rectifier. The diodes were not destroyed. The bridge rectifier worked.
Left and right junctions, since you seem to have problems.