considered | concerted effort

[James Knight]

In today's LA Times, quoting Gen. WB Caldwell on the increased number
of attacks on US forces:

"There has been a much more considered effort to specifically target
coalition and Iraqi security forces,"

"considered effort" is everywhere (not, however in the ECDB or ADS-L
archives, as far as I can tell) going as far back as my meager
resources would indicate (1980). Does anyone have an early cite?

Excluding exx using "ill-considered..." and "well-considered...", I'd
guess "considered effort" is an easy slip for "concerted effort". Or
do we assume users actually intended the shift.

-James K. (not a trained lexicographer, but long time lurker on this list)

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