Such green speculations are problematic and will not be pursued further; purely human needs are the concern here.
These works highlight the multifaceted and often problematic relationship of the past to the present.
His decision to exclude secondary stresses (1999: 14), but to include two 'equal' stresses, is very problematic.
He shows that the introduction of such systems has sometimes been problematic because of political, practical, and technical factors.
Such symbolic associations are 'ideological' through and through, though this latter word is problematic.
Here we discuss a number of problematic theoretical and empirical issues related to his claims.
The notion of "change over time" in dream content (from ancestral themes to current themes) is problematic because such change would serve no obvious function.
Both approaches are problematic since they cannot explain why particles and idiom parts can be fronted.
