web web standards < > PURPOSE PRINCIPLES PURPOSE - PowerPoint PPT Presentation

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web web standards < > PURPOSE PRINCIPLES PURPOSE PATTERNS PRINCIPLES PURPOSE < > { } ( ) principles.adactio.com The priority of constituencies In case of con fl ict, consider users over authors over

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principles.adactio.com
The priority of constituencies “ In case of con fl ict, consider users over authors over implementors over theoretical purity.” —HTML Design Principles
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<tag attr="value"> Hello, world </tag> <TAG ATTR=value> Hello, world
Sturgeon’s Law “ 90% of everything is crap.” — Ti eodore Sturgeon
“ Humans are allergic to change.” “ I try to fi ght that.” “ Ti at’s why I have a clock on my wall that runs counter - clockwise.”
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SGML
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Evolution, not revolution —HTML Design Principles
Degrade gracefully “ …document conformance requirements should be designed so that Web content can degrade gracefully in older or less capable user agents, even when making use of new elements, attributes, APIs and content models.” —HTML Design Principles
Pave the cowpaths “ When a practice is already widespread among authors, consider adopting it rather than forbidding it or inventing something new.” —HTML Design Principles
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STANDARDS INTEROPERABILITY AGREEMENT
—HTML Design Principles
“ Consider users over authors…” —HTML Design Principles
“ Consider users over authors…” Web content can degrade gracefully in older or “ less capable user agents…” —HTML Design Principles
“ Consider users over authors…” Web content can degrade gracefully in older or “ less capable user agents…” “ Evolution, not revolution…” —HTML Design Principles
PURPOSE
PRINCIPLES PURPOSE
PATTERNS PRINCIPLES PURPOSE
PAST
PRESENT PAST
FUTURE PRESENT PAST
FUTURE
FUTURE
FUTURE web

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