could there be a case however against economic growth being too fast? an example of too fast would be building a chernobyl before the safety infrastructure was up.
I am not sure how shoddy engineering equates with too fast economic growth. That seems like defining your terms so generally that they can refer to almost anything.
I also think it is ironic that you chose as an example an infrastructure project not built as the result of capitalism.
As others have pointed out, Chernobyl is a terribly example for the point you're trying to make.
Growth can probably be too fast - China has some problems in this regard, infrastructure, basic services, environmental concerns, the political system etc. can't quite keep up with the reasonable demands of a rapidly growing new middle class.
The growth rates attainable for the US and Europe, however, are unlikely to be dangerous.
Web.py is arguably an example of shoddy engineering in explosive software startups that did not become a medical experiment.
"The results show that foremost among the causes of growth in U.S., German and Japanese manufacturing value added is electric power consumption."[1] Now I wouldn't pay too much attention to the word "causes" in there, but...
Define your terms too precisely and there would be nothing to think about.
I also think it is ironic that you chose as an example an infrastructure project not built as the result of capitalism.