Some trade unions fear that the free movement of people depresses wages of ordinary workers because immigrants from other European countries are willing to work for lower wages. Should the free movement of people thus be restricted for some countries, or for certain time periods?

As I would see it, if the free development of individuals is limited for certain nations or for certain time frames , it might decrease the GDP of the particular nation.  

for instance - assume there is where laborers are not completely talented however the assets are in ideal. in the event that the nation permits the talented specialists of different nations, it will build the GDP of that nation however on the off chance that the nation does no do as such, it will truly decrease the GDP and subsequently the monetary advancement will decay.  

so to limit the free development of individuals for certain nations isn't the answer for spare the enthusiasm of conventional specialists while the talented preparing is the most significant answer for spare their advantage. in the event that a unique preparing is given to them, will assist them with working in an increasingly gifted way that will end the dread of getting low wages by common laborers.  

Better apprenticeship and talented preparing is the best technique to spare their advantage that won't hurt the soul of globalization for the free development of individuals.  

in this way, worker's guilds ought not fear for this issue, these should work to give a few abilities to these conventional specialists o make them increasingly effective so they are not viewed as low when contrasted with the talented laborers of different nations.

answer; ///usually the ( irs ) selects returns that are the most likely have errors,based on complex criteria;

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link :