System thinking and system analysis
Systems= combination of elements that function together to produce the capability required
to meet a need
- The true value of a system lies not just in its individual parts but in how those parts
interact through their integration and interconnection
Systems engineering= is both an art and a science focused on developing functional
systems that meet defined requirements within often conflicting constraints
- systems engineer must know where to focus effort and how to probe the design to
achieve the best overall outcome
Structure= underlying framework that shapes how a system functions
Events= something that happened snapshot of a single moment in time
Patterns= recurring trends reveal the bigger picture
Linearity=
- correct answer: scale does not matter
, - correct answer: systems create their own boundaries
Paradigm= is the worldview underlying the theories and methodology of a particular
scientific subject
- Provides starting points and a specific analytical lens on how to de research and
understand the world
Analysis= traditional scientific paradigm, based upon the premise that our basic unit of
interest should be the individual parts of a system
Reductionism= process of breaking down or reducing systems to their constituent parts and
then describing the whole system primarily as merely the sum of these constituent elements
Synthesis= combination of components or elements to form a connected whole
,Epistemology= theory of knowledge and seeks to understand one or another kind of
cognitive success or when knowledge is good to pursue
- Is the study of methods, validity, and scope of knowledge, and of the distinction
between what is seen as knowledge with certain qualities and what not
, Causal loop diagram (CLD)= qualitative model. Represents system variables as nodes
connected by arrows indicating causal influence help to understand why things are
happening
Stock and flow diagram (SFD)= quantitative model that distinguishes between stocks and
flows help quantify how much, how fast, and what happens over time
Stock= foundation of any system are the elements of the system that you see, feel, count,
or measure at any given time
- Doesn’t have to be physical
- Stocks are slow to change, can only change over time due to actions of a flow
Flows= relate to activity or movement, are the inputs and outputs per time unit that increase
or decrease stocks