The OSI Model

OSI Model
	Data unit	Layer	Function
Host layers	Data	7. Application	Network process to application
		6. Presentation	Data representation and encryption
		5. Session	Interhost communication
	Segment	4. Transport	End-to-end connections and reliability
Media layers	Packet	3. Network	Path determination and logical addressing
	Frame	2. Data Link	Physical addressing
	Bit	1. Physical	Media, signal and binary transmission

defining hackable architecture

Hackable Architecture

How do you make architecture that is adaptable?

Think of platforms, not solutions - overbuild infrastructure, underbuild features

Build with an architecture of layers; enable fast layers to change rapidly (learning); slower layers enable stability

Create seamful experiences, based around behaviour not aesthetics; often includes modular design

Undesigned products, or rather not overdesigned; to invite the user in, to encourage evolution

Define vocabularies, or basic patterns of interaction

Leave space to evolve (if physical/spatial, build with modular shapes which can extend easily

Enable users to manage the at-hand information and interactions; the surface layers

Create an aesthetic of ongoing process

This process implies that the designer provides support, engagement over time etc.