Someone who understands the forces of construction better and will figure out what is needed - letting those more proficient in practices, but less proficient in principles do the work.
To grasp the wonders of the cosmos, and understand its infinite variety and splendor, we must collect and analyze radiation emitted by phenomena throughout the entire electromagnetic (EM) spectrum.
The combination of accent lighting, house lighting and photographer's lighting must be effectively blended to give the viewer a clear feeling of what it's like to stand in that room.
Personalized questions: here the reader has to project herself into the shoes of a character and give a personal response. e.g.'What would you have done if you had been Kes?