As the development of mental augmentations accelerated, psychosurgeons began to look at disorders and pathologies for inspiration. Synesthesia has long been a neurological curiosity, and its general harmlessness made it an easy candidate, at least once ways to make it useful had been developed.
Designer synesthesia is most popular among mathematicians, logicians and scientists. Commonly, important mathematical or logical patterns will be made to appear visually distinct. Conversion of phenomenon that exist beyond human sensory ranges into comprehensible qualia are also routine in certain fields.
Designer synesthesia is a psychosurgical procedure.
Timeframe: 1 week
Plot Hook: There have been rumors of an exhuman project to achieve "total" synesthesia, with no barriers between modes of perception, and information being received in whatever way is preferred. Most experts maintain that this can't be done, if it even makes sense. A player character skilled in psychosurgury may nonetheless be contacted with a request to act as consultant. If that goes well, they will be offered to more direct work, work Firewall would be interested in seeing.