Whats the point of doing lactic training/race spesific training during base training?

[volle]

@oldbloke

These types of sessions build race pace specific speed. They are sustained hard efforts that are relevant to the race distance. 5x1K is “too long” and 8x60m are “too short”. They may have a place to play but IMHO are less powerful training stimulants.
There are 2 main approaches to middle distance traing - lyddiard and horwill. Both have proven to work. Have you tried either approach on your own training or in coaching ?
I knocked 5%+ off all my times from 800m to 10miles using multi pace training.

I have tried something similar to Horwills multi pace training and I respond well to that. I think Lydiard training is a bit outdated. Problem with lydard training is that you have too spend so long time putting in the slow miles, and probably not good for injury prone athletes. I think most people tend to train multipace intuitively when training for middle distance.
But still I cant find any reason to do race specific training or more correct maybe, training at 800-1500-3000m paces during base other than variation?
I know many people cover all the paces all year, I just cant find the physiological reason for doing so I am just curious.

Does endurance at 1500m/3000m pace give some other or better stimuli than endurance at 5k-10k pace give?