 In cosmology the most famous example of an “anthropic prediction” is Weinberg (1987)’s prediction for  \(\Lambda\).[43]  One part of Weinberg’s argument is similar to Dicke’s: he argued that there are anthropic bounds on \(\Lambda\), due to its impact on structure formation. The existence of large, gravitationally bound structures such as galaxies is only possible if \(\Lambda\) falls within certain bounds. Weinberg went a step further than Dicke, and considered what value of \(\Lambda\) a “typical observer” should see. He assumed that observers occupy different locations within a multiverse, and that the value of \(\Lambda\) varies across different regions. Weinberg further argues that the prior probability assigned to different values of \(\Lambda\) should be uniform within the anthropic bounds. Typical observers should expect to see a value close to the mean of the anthropic bounds, leading to Weinberg’s prediction for \(\Lambda\).