Well I didn't say anything about 'between 100 years ago and now', so no. Clearly a lot of factors have changed in 100 years, like our now abundant, convenient

Well I didn't say anything about 'between 100 years ago and now', so no. Clearly a lot of factors have changed in 100 years, like our now abundant, convenient sources of calorie-dense food, and sedentary lifestyles, which mean our knowledge and willpower are now more significant than they were then.