Engineering team often face difficult challenges with constrained resources. If the job requires 1 engineer, we put one on the job. If it requires 2, we split topics into actionable chunks and assign them to individuals.
But there are several benefits to do things in pairs: It helps to catch errors and bugs, it allows for better communication and collaboration between team members and it can also lead to more efficient and higher-quality code, as engineers can challenge their peer's assumptions and suggest alternative approaches.