1. Jobs nowadays are much more insecure than they were fifty years ago.
2. Jobs fifty years ago are much more secure than jobs nowadays.
Do they have the same meaning? Thanks in advance.
anonymous 2. Jobs fifty years ago are much more secure than jobs nowadays. The time marker of the past, "fifty years ago", and the present tense of the verb "are" are in grammatical disagreement in that sentence.
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anonymous2. Jobs fifty years ago are much more secure than jobs nowadays.
The time marker of the past, "fifty years ago", and the present tense of the verb "are" are in grammatical disagreement in that sentence. Maybe, it could be used in so-called 'historical present' but I can't imagine the context of that.
(I'm a non-native.)