[kaybe]

Until the time of ~Einstein thought experiments were feasible enough because only the intuitive-upon-closer-inspection parts of physics were discovered.

The big problem is that the finer points of the new physics are just straight-forward unintuitive. To understand even quantum physics (which is very basic) on an intuitive level is sufficiently impossible and has baffled the community for some time (see also the resolution[1]). It is however quite possible to develop a good intuition for the maths describing it.

Sadly, the history of thought experiments and these discussions still linger in the vocabulary used to describe the phenomena. Many words are common words that inspire some people to invent their 'intuitive' own version of the theory, based on what the words mean in every-day discourse[2].

[1] http://abyss.uoregon.edu/~js/21st_century_science/lectures/l...

[2]http://www.energyhealing-quantumhealing.com/ for a particularly amusing example