0 not aware of possible dangers -- неосмотрительный, неосторожный, излишне доверчивый
Unwary travellers can easily get lost in these parts.
Throughout that globe there are some very risky places, and some of the risk for the unwary or the unprotected is caused by disease.
It may be that one is used for the other, and one is substituted for the other for the purpose of deluding the unwary customer.
The desert can be a harsh environment to the unwary and those not used to operating in it or over it.
Many personal tragedies occur and many loan sharks are waiting to trap the unwise and the unwary who have taken on far too much debt.
It is all to easy for unwary scholars to fall into the trap of listing instances of 'transposed inversion chords' or 'turning chords' or 'asymmetrical enlargement'.
They're full of traps for the unwary.
A programming environment should limit the language to the pieces relevant for each stage of a course rather than leaving the entire language available to trap unwary students.
To be fair, this may be just a citation error, but the general tendency to gloss over problematic aspects of the theory are disconcerting, and misleading to the unwary reader.