Abstract: A method, executed by a computer, for overlapping computer processing and human analysis includes: receiving a set of tasks to be executed on an array of data, receiving a user profile, prioritizing the tasks based on the user profile, partitioning the array of data based on a current task, prioritizing a plurality of data blocks, executing the current task on the plurality of prioritized data blocks, and outputting data results to the user. The method may include monitoring the user's interactions with the data results. The method may also include receiving a task profile, and prioritizing the plurality of data blocks based on the user profile and the task profile. The method may also include speculating on additional tasks that need to be executed. A computer system and computer program product corresponding to the method are also disclosed herein.