Your springs cannot be made without violating Earnshaw's theorem!
1) So does your QM. Why should wave functions and quantization
rules be more desirable than little springs? The abstract springs
represent forces which hopefully will be identified without QM.
2) I do not have the book of James Jeans at home; will try to find
time to read it in the library during the week. By the way, not
everybody has access to books which are being referred; short
quotations in messages (or brief summaries) would probably be
appreciated by those who follow the debate.