One way people try to get out of the measurement problem in quantum theory is by continuiously bumping the problem up to larger and larger systems until at some point they get rid of the problem by invoking something new. Asher Peres’ book “Quantum Theory: Concepts and Methods” has the following to say about this:
This mental prcoess can be repeated indefinitely. Some authors state that the last stage in this chain of measurements involves “consciousness,” or the “intellectual inner life” of the observer, by virtue of the “principle of psychophysical parallelism.”[3,4] Other authors introduce a wave function for the whole Universe[5]. In this book, I shall refrain from using concepts that I do not understand.
[3] J. von Neumann, Mathematische Grundlagen der Quantenmechanik, Springer, Berlin (1932) p. 223; transl. by E.T. Beyer: Mathematical Foundations of Quantum Mechanics, Princeton Univ. Press (1955) p. 418
[4] E.P. Wigner, Symmetries and Reflections, Indiana Univ. Press, Bloomington (1967) p. 177
[5] J.B. Hartle and S.W. Hawking, Phys. Rev. D 28 (1983) 2960