I think that soldering is the most effective connection. Could you please comment?

There has been significant progress in the technology of connection during the last 60 years. As a result, we have a whole generation of tools, dies, and connectors that make connections without soldering. New technologies that go on non-stop demonstrate the correctness of this strategy. Non-soldering connection nowadays are used in aviation, marine and space industries, as well as in common electrical practices. It is also important that non-soldering connections are more user-friendly, whereas soldering needs to use an alloy of lead.