Batman was writing to Schiller. They had been corresponding about the research findings on this mysterious blood. Somewhat to Batman's surprise, Schiller was very interested in the results. In Batman's impression, the doctor was not the sort of person who cared about such things.
At the same time, he was also writing to another correspondent: Dr. Sohip. Their letters were mainly about the investigation into Barbatos and the source of that dark energy.
Batman had learned from the letters that the United States in the universe where Schiller currently resided was experiencing what was nearly the most severe Economic Crisis in its history. Society as a whole was on the verge of collapse.
So Batman invited Schiller to visit his universe. Not because Batman was worried that the Economic Crisis would lower Schiller's quality of life, but mainly because he was worried that Schiller's presence might lower the quality of life for people who were already having a hard time during the crisis.
Such as those unlucky students at Gotham University.
Batman knew that before an Economic Crisis, there was often a period of soaring stock prices. At such times, whether they worked in finance or not, people liked to throw their money into the market. That included students with a little spare cash on hand.
Students were young, less able to resist temptation, and had a harder time distinguishing right from wrong or understanding the market. They only knew that if they threw money in, it would multiply. They were also more prone to gambling, liked forming groups, and often one person would invest before an entire crowd followed. When the market crashed, they were liable to jump together.
If, at that moment, there was also a strict teacher pressing their heads down and making them hand in assignments,