1. An information system comprising: a graphical user interface; one or more three-dimensional concentric cylinders graphically displayed, by a computer, in the graphical user interface, each cylinder represented by two or more spatial dimensions, an intersection of the two of more spatial dimensions defining a segment, wherein the segment represents a collection of information representative of a task of a project, and wherein the segment represents the intersection of the two or more spatial dimensions, each cylinder of the one or more three-dimensional concentric cylinders comprising a plurality of segments, each segment being three-dimensional such that each segment characterizes a portion of a corresponding sector of a respective disk portion of a corresponding three-dimensional concentric cylinder; and one or more controls displayed, by the computer, in the graphical user interface with the one or more concentric cylinders, the one or more controls being responsive to user input and configured for graphically manipulating selected segments of the one or more concentric cylinders, the selected segments being selected by a user from the plurality of segments, one or more segments being resized automatically to fill a space corresponding to a neighboring segment that is empty, the selected segments being grouped together in a grouping using the graphical user interface to enable operations on the selected segments, the grouping being visually indicated by at least one of a shading or a border, the operations including at least one of a subtraction and a unification, the one or more controls being represented by one or more straps around at least one of the concentric cylinders, the grouping being configured to provide activation and deactivation of a plurality of groups, the activation of the plurality of groups is further configured to provide activation of at least one of the groups to enable the user to search the information, the information being searched only in the selected segments of the activated plurality of groups.