I'm clearly talking about quantitative modeling tools.
That said, while Linux and Chromium are massive projects each with years of development with thousands of engineers behind them, so of course it would be ridiculous to expect a single engineer to build such a thing. I also wouldn't expect an MLE to build SKLearn entirely as is from scratch on their own.
However, I do certainly hope most CS folks could implement an OS or Web browser from scratch.
That said, while Linux and Chromium are massive projects each with years of development with thousands of engineers behind them, so of course it would be ridiculous to expect a single engineer to build such a thing. I also wouldn't expect an MLE to build SKLearn entirely as is from scratch on their own.
However, I do certainly hope most CS folks could implement an OS or Web browser from scratch.