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-
- I wish that people would take a less inflammatory tone in
- the mail, and try to assume that even if some parties may
- be wrong, they are at least possessing good will and a desire
- to find solutions that work for all users.
-
- Larry says he has a problem. As I understand it, his problem
- is that moving data is expensive, so he wants to have more information
- available at the client before retrieving the data. Why would anyone
- object to this?
-
- Does it help to consider that someday, maybe soon, much network data will
- be sold for a fee. Would you object to customers wanting information
- about data before paying the price?
-
- If we agree this is a real problem, then we face the problem
- of finding a solution that is practical, efficient, compatible,
- and so on.
-
- Now, as N Freed points out, no method exists to automatically
- compute in the general case the resource requirements of e.g. PostScript,
- that has little bearing. For one thing, there are many data types
- which are not turing complete programs (e.g. GIF files). For another,
- the person who produced the PostScript in the first place probably
- knows the measurements. After all, if I created a .PS file and put
- it on the net, I probably displayed it at least once, so I know well
- enough that it does halt. (unless I am malicious.) And finally,
- even if the creator does not tell you, you can still compute it, once,
- and then store the results in the file archive, or Wed, or whatever.
-
- The fact that a full, general and automatic solution is impossible
- does it lessen the value of partial solutions.
-
- So the proposed solution is to have more explicit labeling. What's
- wrong with that? If you dont use it, it costs nothing.
- If you do use it, it makes life easier for people.
-
- You can argue that many people are too lazy to provide this information,
- and I agree But not everyone is lazy. there will also be people motivated
- to expend the trouble to label the data, yes, even to go to the
- extent of computing how much main memory you will need to uncompress
- and so on. Why will they be motivated? Because those who do will have larger audiences, and that is already a motivation. And when money starts to
- enter the picture, the motivation for market share will be stronger.
-
- There will be a consumer's union and an underwriters laboratory for
- information space. The question is where to put the information,
- the "meta data" if you will.
-
- Best wishes
-
-