David Cameron cracks down on online pornography

Commonly used hash algorithms are too rigid. A detection system shouldn't be bypassed just when a single bit gets flipped in a large file. The algorithm need to be fault tolerant, give few hash collision, and be proven by the passage of time. This of course a contradiction in terms.

It also need to be maintained and safe guarded against abuse. Who will watch the watchers, and how do we control what gets defined as offending images if there is no public reviews?

How is legal rights handled? How should appeals be handled, and peoples right to face ones accuser.

How do we control scope creep so "unwanted" political competition don't get suppressed under anti-propaganda laws? How is the slippery slope argument handled?

And last... but far from least, is the classical argument of 20th century political environment: Practicality. What does the cost-benefit analyses say about such filters and databases. Is the maintenance that those databases require cost more than they provide to society? What other options has been thought of, and how does the databases compare in efficiency and cost?

So if we think about it, maybe the harms are not that well hidden.

He did an interview with the BBC Radio Four programme "Woman's Hour". He sounds computer illiterate.

(1) You know (or can tell) what content your kids are exposed to on the internet. Most kids I know are quite adept at keeping what they are upto hidden from their parents and that isnt unique to the current generation.

(2) Parents have a much better sense of content, kids are exposed to on TV (where content is regulated and rated for the most part) than on the internet.

(3)Even if you are an involved parent with the ability to discuss things with your daughter, you both arent living in isolation from society. There are easily more parents and kids that don't have such a relationship than the number that do. So if boys as young as 8-10, growing up in highly unsupervised environments, are constantly exposed to extreme porn, what do you think their expectations of women are going to be?

(4)Addiction. Everyone has weaknesses. And porn sites are getting better and better at keeping people hooked. Kids are the most susceptible.

Freedom has always come at a cost. And the main cost is equality. If all kids are born equal and all families are created equal sure give them all the freedoms they want. But that is unfortunately not the world we live in today nor is it getting any more equal any time soon.