Participants frown upon late arrivals, and some data-obsessed engineers have even computed the costs of tardiness.

WSJ: No More Angling for the Best Seat; More Meetings Are Stand-Up Jobs

As most doctors don't know how to use those printers, hospitals need engineers to operate the printers and help convert images from computed tomography and other medical equipment to 3-D data that can be printed out.

WSJ: Next to Use 3-D Printing: Your Surgeon