Consider commuting with a friend in the morning: if you get dressed and get out of the door in 5m instead of 10m, but then have to wait for me to come pick you up, and then we both sit in a car for 5m to get to the train, and then we sit on that for 50.. then your speed up doesn't really matter.
I don't know if this is the case for drug development but as GP said, we already have more designs than we can test.
Consider commuting with a friend in the morning: if you get dressed and get out of the door in 5m instead of 10m, but then have to wait for me to come pick you up, and then we both sit in a car for 5m to get to the train, and then we sit on that for 50.. then your speed up doesn't really matter.
I don't know if this is the case for drug development but as GP said, we already have more designs than we can test.