Dempsey looked at the work again. Then he asked Malcolm to explain every step aloud.
Malcolm did. Several students had remained nearby, including Ethan Walsh.
When Malcolm finished, Dempsey said the method was acceptable and walked away. Ethan looked at the whiteboard and then toward another group of students. “He didn’t make anybody else prove they solved theirs,” he said.
Malcolm erased the board. “I noticed.” Ethan looked uncomfortable.
At that point Ethan had no special reason to involve himself. He was white, eighteen, brown-haired, soft-spoken, and more interested in engineering club than student politics despite serving on the student council. He had known Dempsey for two years and generally considered him strict but fair. The problem-solving tournament was the first time that explanation felt incomplete.
Two weeks later, Ethan saw something similar. Students submitted designs for an optional aerospace challenge, and Malcolm proposed a small motorized model demonstrating different orbital speeds. Dempsey looked at the sketch and told him it was “probably more ambitious than necessary.” A white student named Caleb Morris proposed a robotic satellite-tracking arm that was at least as complicated.
Dempsey praised Caleb for challenging himself. Ethan wrote both comments down. He did not know yet what he planned to do with them.
Malcolm kept working. He had started realizing that if he allowed Dempsey’s expectations to determine the size of his projects, he would spend senior year shrinking things he had spent years learning how to build. The orbital model remained in his notebook. By November, it had become the idea he wanted to use for his semester capstone.
The assignment required each student to demonstrate a principle from astronomy or physics through a physical model, experiment, or digital simulation. The written rubric specifically encouraged working prototypes. Malcolm proposed a mechanical solar-system display with independently geared planets moving at proportionally different speeds. Dempsey approved the proposal by signing the bottom of Malcolm’s planning sheet.
Building it took six weeks. Malcolm cut the circular base from lightweight wood in Northgate’s engineering lab, covered it with a printed star field, and mounted a glowing sphere in the center as the sun. The planets sat on thin metal arms linked to a small geared motor assembly beneath the platform. The orbital periods were compressed for demonstration, but the ratios followed actual planetary differences closely enough to illustrate the concept.
Curtis helped only when Malcolm needed access to a drill press at a friend’s workshop. He refused to touch the gear assembly. When Malcolm spent an entire Saturday trying to stop Saturn’s arm from catching Jupiter’s orbit, Curtis sat across the garage drinking coffee and offering no useful advice.
“You know what’s wrong,” Curtis said eventually. Malcolm told him that if he knew what was wrong, he would have fixed it.
Curtis grinned. “Then now you know what you don’t know.” Malcolm threw a rag at him.
By the end of winter break, the model worked. The sun glowed, each planet moved, and a small control beneath the base allowed Malcolm to pause the system during explanation. He also prepared a binder containing calculations, design sketches, gear ratios, sources, and photographs documenting construction from the empty wooden base to the finished project. Nobody could reasonably claim he had not done the work.
Malcolm brought the model to school one Monday for a preliminary inspection. Dempsey stared at it longer than Malcolm expected. He rotated the platform, looked under the base, and asked who had built the mechanical assembly.
“I did.” Malcolm handed him the documentation binder.
Dempsey flipped through two pages. “Your father an engineer?” he asked.
“No.” Malcolm said his father repaired elevators.
Dempsey nodded slowly. “So he’s mechanical.” Malcolm felt the implication immediately.
“He didn’t build it.” Dempsey said he had not accused anyone of anything.
The following week, Caleb brought in part of his robotic tracking project. Dempsey asked whether his father had helped with the coding. Caleb laughed and said his father had probably made it worse if he tried. Dempsey laughed too.
He did not ask Caleb to document independent authorship. Ethan noticed. So did Malcolm.
That afternoon, Malcolm went to counselor Sandra Kim and described what had been happening. He did not accuse Dempsey of being racist. He simply listed the incidents.