Google Deep Learning system diagnoses cancer better than a pathologist with unlimited time

It's hard to think of a job more important that determining whether or not a patient has cancer. Yet the magnitude of the task facing pathologists is so vast that agreement between different clinicians studying the same slides can be as low as 48%. There can be many slides per patient, each of which is 10 gigapixels when digitized at 40X magnification. Imagine having to go through a thousand 10 megapixel (MP) photos, and having to be responsible for every pixel. Needless to say, this is a lot of data to cover, and often time is limited.