Of course, but what is preventing Didier from growing his own hay?
More seriously, hay does not require too much effort because it is machines that take care of the essential. For my part, I produce hay (almost) manually and the bundling is painful (it is sometimes possible to skip this step if the source and the destination are close).
There are other ways of formulating this question, for example: with a population of 7 billion, is it possible to produce both the food and the energy that supposes it or not? In the past, with a much smaller demography, one of the best answers had been slavery ... Agricultural yield, including the energy absorbed, remains low and above all playable on a small scale ...
The industry is not doing much better, which we can now see that it is reaching an important stage of development *: what I find funny is that financial newspapers are starting to echo these concerns!
* Because negative externalities are not counted against the results.
: the covid did not demonstrate much, since the shutdown was only temporary and we could therefore benefit from the inertia, stocks and previous dynamics ...
“Make love not working”, but with a condom ...
, of course, they serve essentially to keep the system in operation, in other words this corresponds to a collapse of systemic efficiency (from - to - jobs produce abstract value and the latter is + and + redistributed to unproductive jobs according to this criterion; fortunately, the loans come to make up for this lack ...).