Here is the Texas State Capital building photographed in 1889.
It can readily be observed how foliage is sparse and new trees have been planted.
No more than ten (10) years later (Photo records logged 1890's), we can observe:
1. The row of trees leading to the Capital have rapidly matured.
2. Very mature trees are present along the front of the Capital, where none were planted in 1989.
Here is a closeup of a front section of the Capital building in 1889.
Here is a closeup of the same front section of the Capital building no more than ten (10) years later.
It's odd how twenty-five (25) feet tall trees emerged so quickly.
However unlikely, the anomalies could be explained by:
1. Inaccurate library records.
2. Young transplant trees being heavily irrigated and fertilized.
3. Mature trees having been transplanted.
Ever seen a bucket of cement take over ten (10) minutes to load and deliver before returning to the ground?
By observing and timing the common tasks a tower crane performs on a jobsite, reliable timeframes can be obtained and used to estimate and/or extrapolate crude, but accurate, timelines for construction.
The image here is of the very start of the video below. The pink circle indicates the bucket of cement that moves out of frame at the beginning of the video; the causal viewer would miss it.
This video shows that by counting the time it takes to lift and position the number of form supports on a site, there isn't enough time in two (2) weeks to construct the floor of a condominium or office tower. The work happens, of course, and the final pdf on this site can definitively answer how it does so rapidly.