During greens maintenance why don’t we tine half a green one week and the other half the following week so the hole can always be placed on a smooth surface?

We perform tining on whole greens as our greens are relatively small. If we were to only tine half a green at a time it would roughly double the time required to perform the maintenance, would increase the cost of this maintenance work and would also mean that the recovery time of the whole green is longer. Also, because the greens are small it is likely that balls would still end up on a tined area, which would need to be putted across before reaching the smooth untined area, thus making your situation potentially worse as you would be trying to putt across two different types of surface.