I guess it's more about priorities, if you want to build a web app don't reinvent the underlying protocols. If you want to build an embedded system for monitori

I guess it's more about priorities, if you want to build a web app don't reinvent the underlying protocols. If you want to build an embedded system for monitoring room temperature don't invent your own locks. But if you want to make a lock by all means make a lock, just don't go and reinvent the chip architecture...