ZeljkoS

"Dose to Cargo: Less than 0.1 microSievert (μSv) per scan (equivalent to 10 microRem (μrem)), at an average speed of 5 km/h (3 mph) at a scan distance of 1.5 m (5 ft). Should a stowaway accidentally be scanned, the effective dose is well below the ANSI specified limit for accidental exposure and is equivalent to flying two minutes at altitude."

In other words:

a) "Beam" is not over a small area but over the entire scanning area.

b) The 0.1 μSv dose is for entire cargo.

c) The total body dose in above case is therefore much below 0.1 μSv (because person is much smaller than cargo).

Also read this: http://www.medpagetoday.com/PublicHealthPolicy/PublicHealth/...

You are completely right, education or job are not the reason to put down anyone. I wanted to point out that if someone approaches you with the biggest inventions in the century but has no credentials, you would be skeptical, wouldn't you? However, you are right, I could said that point much better.

Completely true. That is exactly the Bret Victor's point in "Inventing on Principle":

http://vimeo.com/36579366

http://worrydream.com/#!/LearnableProgramming

Programming tools (languages, APIs, IDEs) needs to reduce the problem you need to hold in your head.