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Non-profit dance companies , and dancers themselves can ill-afford non-durable shoes . Dwight Kelly , president of Apago said the company incorporated a lot of feedback from customers to make the solution easier to use . As the work at the barre progressed , the things we did became more dance-like and less like exercises . Miss Hamilton differed from most teachers in that she started every class with exercises on the floor : stretching and limbering up and doing things like touching our feet ( or , in my case , trying to ) . And I believe that one of the positive developments of the last few years , engendered both by the exceptional level of regulatory activity and by the growing recognition of the potential global impact of regulation , has been the increased coordination between regulators across borders ( particularly between the United States and Europe ) and the recognition on both sides that , while disagreements may exist , it is nonetheless important to avoid surprises . Some teachers now offer special classes called " floor barres " ; I took one of these once , and it was a joyride in comparison with Miss Hamilton 's exercises . Noisy pointe shoes make the dancer seem heavy and earthbound - undermining the ballerina 's performance both dramatically and technically . According to the Amazon.com site , customers who bought the upgrade also bought : The Da Vinci Code DVD and 24 Season 5 DVD along with a couple of other software products . While such an explosion would likely make for some great news , it 's likely that it would be customers who ultimately paid the price in convenience . Thad McIlroy talks about the pricing for Adobe 's latest version of Acrobat and discusses whether this expense is justified for existing customers . Regulators and users also need to be mindful of hindsight and second-guessing , but rather should expect registrants to have a reasonable basis for the estimate or assumption . Then class begins , and we start doing these beautiful exercises , most of which date back 300 years , and again I think how fortunate I am , and again what a privilege it is to be in contact with all this history and tradition . There is ongoing criticism of regulators generally , including the Commission , that we do not do enough to facilitate global markets and investment . I enjoyed these ; it made me feel we were already dancing , even in the most elementary exercises at the barre . Ballet shoes are the same for both feet , and they acquire left - or right-footedness through wear . For example Taglioni added darning to her slippers , Legnani had her slippers made with a slightly stiffer box , Pavlova reinforced her shoes with a leather shank . In English-speaking countries there is a pervasive feeling that dancing is somehow unmanly . One regulatory constant is that the actions of regulators can have a significant effect in global markets . Regulations and regulators should facilitate that very positive development . With few exceptions , traditional pointe shoes have shanks made from a paper product such as cardboard or fibreboard - hence the lack of durability .