A graphical forensic scheduling system is described. The system may receive a data date on a time-scaled project schedule. The system may calculate link gaps based on predecessor and successor relevant dates on either side of the data date. The system may automatically correct logic ties if actual dates for related activities are out-of-sequence. The system may calculate and display forensic floats, forensic drifts, and forensic total floats for actualized activities based on an algorithmic function of all link gaps on either side of the data date, i.e. forensic gap or otherwise. The as-built critical path may be determined based on the forensic total floats. The system may continuously and automatically refresh in real-time, forensic float, forensic drift and forensic total float any time a gap on either side of the data date takes on a revised value due to activities being repositioned on the timescale. The system, by supporting GPM rules, may automatically heal corrupted logic right of the data date and automatically and continuously refresh forensic float, forensic drift and forensic total float on either side of the data date. The system may optimize the schedule by sliding and/or shortening or lengthening activities, and maintain forensic float, forensic drift and forensic total float current with respect to such optimization schemes taking place right of the data date. The system may support gestural recognition, surface computing and voice recognition, and provide users with visual feedback on the impact to a schedule, both prior to and subsequent the data date, immediately upon gestural or surface input.