If one is interested in investing for high growth PE stocks then one should:
1) must buy a portfolio not a standalone company. It helps to spread out the risk(read speculation for forcasting future growth)
2)Portfolio size should not big, risk spread is handled on the assumtipn that out of 10 stocks 2-3 will give strong results and compensate losses from remaining
3) Selection of companies should be based on businesses which looks scalable as well as uses franchise model
4) MCap is also to be checked for portfolio, they should show the hope for expansion with reasonable estimates
4) Growth rate should not be more than RoE
5) Hold portfolio for min 3-4 years
6) Recheck the story periodically
Above is the summary of Basantji's approach for justifying to buy high PE stocks. Argument is that high PE is definitly risky but above strategy has worked for him in the past so conviction is an individual matter.