With current technology, this area of space is quite small.
"Would their current technology level even give them the ability to try anything like that?"
This is far beyond the limits of any current technology.
Afterwards, they do a test with the current technology used.
Most, however, are impossible with current technology and physical laws.
In the figure above the first curve shows a current technology.
How does our current technology stack up against this list?
With current technology such an increase in production would have a substantial environmental impact.
For most forms of current technology, these questions have long been settled.
Using current technology, it would take 1000 years to get rid of them all - even if the money were available.