Also one can chock up some of the crappiness of the TPM puppet to new technology. At the time the film 'Free Willy' was being made a new development in latex casting for special effects came about, giving an incredibly high degree of 'realism' to cast flesh. This technology made some truly realistic animal effects and most SFX artists use that casting/curing process now. The thinking with TPM Yoda puppet was "people believed the puppet in ESB and ROTJ, we'll keep the puppet and with this new technology it will seem even *more* realistic to people!" The logic was sound but the execution was greatly flawed. From 'skin' coloration to the aforementioned lighting to the actual 'youthfull' sculpt the whole attempt tanked; the puppet look worse than toy Yodas that one could buy in the 80s at toy stores.