The government plans to reduce prison overcrowding by introducing electronic monitoring tags for non-violent offenders, allowing them to serve sentences at home rather than in prison. Officials argue this will reduce costs significantly, as monitoring offenders electronically costs approximately £15 per day compared to £100 per day for imprisonment. The savings could be redirected to rehabilitation programmes. Electronic tags use GPS technology to ensure offenders remain within designated areas and comply with curfews. Trials of electronic monitoring in other jurisdictions have shown that offenders can be effectively supervised in the community. This policy will therefore reduce costs while maintaining public safety. Which one of the following is an underlying assumption of the above argument?