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Help link 02/12/2002; 15.06.11.


mercoledì 20 novembre 2002
 

Due dei miei autori preferiti (maître à penser ?) Joel e Jon scrivono quasi contemporaneamente su come fermare lo Spam (non si offenda Paolo. Lui ne ha scritto ma senza dare soluzioni). La proposta di Joel è quella di pagare per mandare ed essere pagati per ricevere. Somme  infinitesimali, ma che ripetute per i milioni di email che gli spammer inviano, spostano l'economia dell'operazione.

Here's what I'd like to see: a system that delivers an email for one cent. Nobody has to use it, but if you want to get your messages through, you pay one cent and the system delivers it for you. Every spam filtering system on earth can safely whitelist all email that comes from the one cent server, because no spammer can afford the penny times the 19 million messages they send. I would use it for all my email. You could even give 3/4s of a cent to the recipient as a credit to use for sending their own mail, keeping the 1/4 cent to pay for the servers. Eventually, if it caught on, you wouldn't need a spam filter: just put all the free email in a suspect folder, and check it once a week in case some old school holdouts insist on sending you email without paying.

Jon invece è meno provocatorio. Un sistema per evitare lo spam, dice da tempo, è l'identificazione. Basterebbe che tutti avessimo un certificato Verisign o Thawte, lo installassimo nel sistema di posta (come si può fare credo dal 97) e piano piano gli sconosciuti che ci scrivono sarebbero facilmente messi in una lista a minore priorità.

Poi viene la parte più interessante: perché ci rompono tanto gli zebedei con l'effetto rete (l'utilità di farsi certificare è una funzione esponenziale del numero dei certificati), se in questo caso dimostra evidentemente di non funzionare?

La matematica che regola il fenomeno dovrebbe essere esattamente la stessa della reazione a catena che fa fare bum alle bombe nucleari. Se il numero di reazioni, pardon di certificazioni, è tale che l'esponenziale è positivo, allora si ha la massa critica e tutti si certificano. Altrimenti niente, e tanto spam. E allora white list (mi segno quelli che mi possono mandare le mail) software antispam e via andare. E se fosse proprio la fatica di usare questi rimedi che spingesse l'esponenziale verso il valore positivo, oltre la soglia (activation network), e ci facesse finalmente usare la crittografia a chiave pubblica?

This has been, so far, one of those theoretical network-effect benefits that hasn't been compelling enough to motivate people to jump through the hoops that now complicate the acquisition of a digital ID -- or to spur vendors to simplify that process. I've often wondered what it would take to get us over the activation threshold. Maybe whitelists are it. When everyone has to register on everyone else's whitelist, PKI's core value proposition -- trusted communication without prearrangement -- will finally start to make sense.

Aggiornamento: Jon ritorna sull'argomento.


11:35:01 PM      comment []

Evidentemente i Queen si sbagliavano. Duecento persone si sono riunite per discutere di come trovare l'immortalità. Sembra che il modo migliore sia patire la fame

There's no time for us
There's no place for us
What is this thing that builds our dreams, yet slips away from us

Who wants to live forever
Who wants to live forever . . . . . ?
Oh ooo oh
There's no chance for us
It's all decided for us
This world has only one sweet moment set aside for us

Who wants to live forever
Who wants to live forever
Ooh
Who dares to love forever
Oh oo woh, when love must die

But touch my tears with your lips
Touch my world with your fingertips
And we can have forever
And we can love forever
Forever is our today

Who wants to live forever
Who wants to live forever
Forever is our today
Who waits forever anyway ?

A Few Ways to Win Mortality War. United in the cause to outwit the grim reaper, experts in nanotechnology, cloning and artificial intelligence explain how they plan to do it. Kristen Philipkoski reports from a life extension confab in Newport Beach, California. [Wired News]


10:36:32 PM      comment []

Joel commenta il nuovo libro di Goldratt. Ho letto "L'obiettivo" molti anni fa e non so se non l'ho capito o era troppo ovvio. Comunque mi è piaciuto. Adesso Joel commenta positivamente sia "The Goal" che il nuovo libro Critical Chain

I can't do justice to an entire book in this short post, but if you're doing any kind of project scheduling or management, I highly recommend that you read both books (read The Goal first no matter what you do, both because it's more entertaining, and because it teaches you the foundation you need for Critical Chain). [Joel on Software]


10:24:02 PM      comment []

Altra puntata della rubrica di Tombolini sul vino. [Simplicissimus]


10:08:20 PM      comment []

Grandissima segnalazione, Massimo. Non ho nulla da aggiungere se non che l'orario è un disastro per me. Di solito alle otto mangio poi gioco con i bambini. Oggi però quasi spero nel solito ingorgo in autostrada (la Bologna-Modena, se qualcuno di voi la sente nominare alla radio mi pensi, ci sono spesso) per sentirmi il buon Odifreddi.

Potenza della radio. Io ho sempre odiato la matematica. Eppure da qualche sera su Radio 2 Piergiorgio Odifreddi mi sta facendo cambiare idea. Il programma in questione, Alle otto della sera, e' una vera e propria isola di intelligenza, qualsiasi sia la materia di cui si parla. Odifreddi - che in rete molti conoscono per essere stato querelato da Antonino Zichichi a causa di questa fantastica recensione ad un libro del fisico (?) siciliano - nelle puntate in onda in questi giorni tratta del teorema di Fermat. Il mio consiglio e' di ascoltare almeno la prima puntata. Stasera alle 8 "live" la terza puntata. [manteblog]

Aggiornamento: Macchè, niente coda. Comunque ho fatto in tempo a sentire i primi 15 minuti. Ottimo.


6:36:07 PM      comment []


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