There is the type of application that the person may put the item or knowledge to, for consideration too.
I have a huge knife but it sits in the kitchen next to the breadboard. -It's considered a normal kitchen breadknife.
If I brandished the same knife in a public place then there would be offences committed.
I look at pyrotechnics as a hobby with pretty colours, shapes and movement. Stars, rockets, cakes, cones, candles etc even the noise is incidental though some noise is essential.
I'm a graduate chemist I could mis-apply pyro and chemistry but I am dis-inclined.
I agree
Interesting thread
It is a dangerous situation to agree with the banning of information, as this promotes bigotry in society and can lead to dichotomy of beliefs.
I agree some information can be used to create fear, however it should be intent to use information against society that should be denounced, investigated and prosecuted. A witch hunt is not helpful.
At the end of the day a committed terrorist will find the information he requires to achieve his aims regardless of whether a book is banned or not.
I enjoy the hobby of pyrotechnics with all the crowd pleasing effects that it is able to create, however if we allow information to become banned then this may not be a hobby that it is possible to pursue in the future because as I am sure you will agree certain compositions could be subverted for other uses (certainly more powerful that the gunpowder this chap was intending to use).