If the adage "Experience is the best teacher" is applicable in different spheres of life, it is definitely applicable in the cryptospace. Those who have been in this space for quite sometimes now will be able attest to the fact that the experience they have had through encounters with different projects and coins on different exchanges, is now helping them to be able to identify at least to an extent both genuine and scam projects.
What could have aided this could be due to the fact that there is no regulatory body, alongside other reasons in the cryptosphere.
So, the more your level of exposure, the more your experience and the better you become.
Experience is always a virtue that instruct a man's mind with discretion against making a mistake over and over again. It will go a long way in providing better approaches and solutions to situations as they unfolds.
With regards to crypto however, people that have found themselves in an awkward position in time past, have learnt, hence moving on. That is why when you hear or see some people testimonies, it's always evident how they have learnt from earlier pitfalls; using it as a stepping stone into better fortunes.