The phrase "are seen as complex" is correct and usable in written English.
It can be used when discussing perceptions or interpretations of something that is considered intricate or complicated.
Example: "The theories surrounding climate change are seen as complex due to the numerous factors involved."
Alternatives: "are regarded as intricate" or "are perceived as complicated."
Auto-enrolment is only one part of the solution, said EY's Andy Baldwin, we have to accept that for the average customer, pensions are seen as complex and restrictive.
These networks are seen as complex adaptive systems, with their structure changing permanently and dynamically.
These tumours are seen as complex multilocular masses, usually with thick and irregular walls, septations, solid components and papillary projections of low signal intensity on T2-weighted images with contrast enhancement after gadolinium administration (Figs. 10 and 11).
In SSM, services are seen as complex human activity systems which can be understood in terms of the relationships between their structure, process and outcomes.
At the time of his death Mozart was widely regarded not only as the greatest composer of the time but also as a bold and "difficult" one; Don Giovanni especially was seen as complex and dissonant, and his chamber music as calling for outstanding skill in its interpreters.
Software systems can be seen as complex networks of interacting blocks (a) describing given structures or functions.
Transport interventions can therefore be seen as complex public health programmes, and assessing their outcomes against health and sustainability goals is vital.
Schizophrenia (SZ) and bipolar disorder (BD) are debilitating neurobehavioural disorders likely influenced by genetic and non-genetic factors and which can be seen as complex disorders of synaptic neurotransmission.
In such case, particularly these patterns can be seen as complex delays.
In general, trust, reciprocity, and cooperation create feedback loops, and can be seen as complex adaptive systems in which insignificant circumstances become magnified.
They can be seen as complex, non-linear processes, balancing evidence, policy alternatives and domestic and international politics (Grindle and Thomas 1991; Walt 1994; Kingdon 1995).
