That article is so vague about what invasion of privacy is that it defies common sense. For example this sentence: "If a computer programmed by people learns the contents of a communication, and takes action based on what it learns, it invades privacy."
That's just vaguely-defined alarmism. By that exact definition, the paperclip from Microsoft Word invaded people's privacy every time it said "You appear to be writing a letter". By that definition, the spellcheckers and grammar checkers in word processors and email clients invade privacy. Those clearly aren't invasions of privacy though because none of those actions reveal anything about you to anyone else.
The problem with his argument is that you cannot claim all forms of personal polling are dangerous, they're not. Elections in democratic countries are usually anonymous for example, and they're run and monitored by humans, but unless those humans can see your name on the ballot paper then they have no way of knowing how you voted.
Electoral officials know how people voted in total, and they can see how votes break down between regions, but if they were presented with an individual they have absolutely no way of knowing which way that person voted.
"Google (or Tesco, or the spooks...) can still infer a huge amount of information about individuals and groups, without having "read" anything, or accessed your data directly."
Infering information about people is a vague phrase though. No one wants their personal life invaded, but who could be offended by opinion polls? If electoral data shows that people from New York are more likely to vote for Democratic candidates, does that really harm anyone?
If half your shop's till receipts include bananas, you can infer that half the customers buy bananas, but without any personal identification on the receipts you can't know which customers those are, so you've gathered valuable commercial information without invading anyone's privacy.
No one minds Tesco knowing that half their customers buy bananas, or that people who buy bananas also buy oranges. The only thing people might mind is Tesco knowing exactly which customers bought bananas and/or oranges.
If Google's automated advertising system reports to Google which ads it shows for each account along with that account's username, then it does indeed invade privacy. That ought to be banned, or at least restricted so that users know exactly how much they're being monitored.
But if the ad system merely reports an aggregate total for a country or region or demographic, or if it reports on individual accounts in an anonymised way (like the till receipts for bananas), then Google can't possibly infer anything about any individual.
We've got to be careful to zoom in on exactly what it is that's dangerous, otherwise it will hide behind perfectly legitimate analyses of data. The greatest danger is when information about an individual is packaged with something that can identify that individual or any other individual. Above all else, that kind of packaging together is what should be regulated by data storage privacy laws.
"It doesn't matter: a human still writes the program."
The actions of a human in the production process don't automatically mean that the human can perceive everything that the product is involved with.
People who build changing rooms tend not to secretly install hidden cameras. They could, but you can't just assume that they automatically will do.
"This has consequences, and you have to be very careful here, because if you permit Google to make this defence, you have to permit other people to, as well."
I didn't permit Google to make any defence, I'm not defending them here. The only thing I'm trying to defend is common sense.
I have no idea how the Google Gmail ad system actually works. They ought to either make Gmail's ad system public, or allow neutral observers to verify that it doesn't breach personal privacy.
What I AM saying is that it's irrational to say that ALL forms of automated analysis must be invasions of privacy. We have to stay rational here, otherwise we end up in "governments track us through metal strips in bank notes" territory. There are big players involved and I'm sure a lot of them are up to no good, but unless we distinguish the worrying stuff from the not-so-worrying stuff, we'll never tackle breaches of privacy.
What I want to see is a neutral regulator with the power to heavily punish storage companies. That neutral regulator should be able to do thorough and random checking to make sure that data storage companies have no way to infer any personal information about any individual.
Just to make it clear, in the article I'm only talking about how the commercial storage sector behaves.
If we move on to governments and law enforcement it gets far, far more complicated from a moral perspective. That's a huge and far more complex topic with no clear answers, and I'm not even going to touch that one! 😊