Neither speaker expresses an opinion. Claude doesn’t indicate a causal relationship between economic productivity and quality of life. Thelma indicates that more economic productivity will improve quality of life, but doesn’t say the relationship can be reversed.

Claude expresses no opinion. He doesn’t discuss failing companies.

Thelma expresses no opinion. She doesn’t discuss promotions or how people react based on their perception of chances of promotion. She does believe people will form their own companies, but that doesn’t mean this decision is influenced by the chances of promotion.

Neither expresses an opinion. They both agree that there currently is a high number of middle-aged people in the workforce, but they don’t speak to whether the number of these people will increase in the future.

This is a point of agreement. The speakers disagree about whether productivity will go up (Thelma thinks this) or down (Claude thinks this), but they both agree that there will be some effect on productivity from the number of middle-aged people in the workforce.